[
  {
    "prefix": "custom-user-timing",
    "base": "http/tests/performance-timing/custom-user-timing",
    "args": ["--enable-blink-features=CustomUserTiming"]
  },
  {
    "prefix": "gpu",
    "base": "fast/canvas",
    "args": ["--enable-accelerated-2d-canvas"]
  },
  {
    "prefix": "threaded",
    "base": "fast/idleToBlob",
    "args": ["--enable-threaded-compositing"]
  },
  {
    "prefix": "threaded",
    "base": "external/wpt/offscreen-canvas/convert-to-blob",
    "args": ["--enable-threaded-compositing"]
  },
  {
    "prefix": "threaded",
    "base": "compositing/visibility",
    "args": ["--enable-threaded-compositing"]
  },
  {
    "prefix": "threaded",
    "base": "animations/animationworklet",
    "args": ["--enable-threaded-compositing"]
  },
  {
    "prefix": "threaded",
    "base": "lifecycle",
    "args": ["--enable-threaded-compositing"]
  },
  {
    "prefix": "threaded",
    "base": "http/tests/worklet",
    "args": ["--enable-threaded-compositing"]
  },
  {
    "prefix": "threaded",
    "base": "external/wpt/css/css-scroll-snap",
    "args": ["--enable-threaded-compositing"]
  },
  {
    "prefix": "threaded",
    "base": "compositing/webgl",
    "args": ["--enable-threaded-compositing"]
  },
  {
    "prefix": "threaded",
    "base": "external/wpt/requestidlecallback",
    "args": ["--enable-threaded-compositing"]
  },
  {
    "prefix": "prefer_compositing_to_lcd_text",
    "base": "compositing/overflow",
    "args": ["--enable-prefer-compositing-to-lcd-text"]
  },
  {
    "prefix": "prefer_compositing_to_lcd_text",
    "base": "scrollbars",
    "args": ["--enable-prefer-compositing-to-lcd-text"]
  },
  {
    "prefix": "threaded",
    "base": "animations",
    "args": ["--enable-threaded-compositing",
             "--disable-composited-antialiasing"]
  },
  {
    "prefix": "threaded",
    "base": "transitions",
    "args": ["--enable-threaded-compositing"]
  },
  {
    "prefix": "threaded",
    "base": "fast/scroll-behavior",
    "args": ["--enable-threaded-compositing",
             "--enable-prefer-compositing-to-lcd-text"]
  },
  {
    "prefix": "threaded",
    "base": "fast/scrolling",
    "args": ["--enable-threaded-compositing",
             "--enable-prefer-compositing-to-lcd-text"]
  },
  {
    "prefix": "threaded",
    "base": "fast/events/pinch",
    "args": ["--enable-threaded-compositing"]
  },
  {
    "prefix": "threaded",
    "base": "fast/events/pointerevents/pinch",
    "args": ["--enable-threaded-compositing"]
  },
  {
    "prefix": "threaded",
    "base": "synthetic_gestures",
    "args": ["--enable-threaded-compositing"]
  },
  {
    "prefix": "gpu-rasterization",
    "base": "images",
    "args": ["--force-gpu-rasterization"]
  },
  {
    "prefix": "exotic-color-space",
    "base": "images",
    "args": ["--force-color-profile=srgb",
             "--force-raster-color-profile=color-spin-gamma24"]
  },
  {
    "prefix": "stable",
    "base": "compositing",
    "args": ["--stable-release-mode"]
  },
  {
    "prefix": "stable",
    "base": "paint",
    "args": ["--stable-release-mode"]
  },
  {
    "prefix": "stable",
    "base": "webexposed",
    "args": ["--stable-release-mode"]
  },
  {
    "prefix": "stable",
    "base": "http/tests/serviceworker/webexposed",
    "args": ["--stable-release-mode"]
  },
  {
    "prefix": "stable",
    "base": "http/tests/navigation",
    "args": ["--stable-release-mode"]
  },
  {
    "prefix": "stable",
    "base": "http/tests/sendbeacon",
    "args": ["--stable-release-mode"]
  },
  {
    "prefix": "stable",
    "base": "animations-unprefixed",
    "args": ["--stable-release-mode"]
  },
  {
    "prefix": "stable",
    "base": "media/stable",
    "args": ["--stable-release-mode"]
  },
  {
    "prefix": "stable",
    "base": "fast/css/stable",
    "args": ["--stable-release-mode"]
  },
  {
    "prefix": "feature-policy-permissions",
    "base": "external/wpt/mediacapture-streams",
    "args": ["--use-fake-device-for-media-stream",
             "--use-fake-ui-for-media-stream"]
  },
  {
    "prefix": "origin-trials-runtimeflags-disabled",
    "base": "http/tests/origin_trials/webexposed",
    "args": ["--disable-origin-trial-controlled-blink-features"]
  },
  {
    "prefix": "stable",
    "base": "http/tests/origin_trials/feature-policy-reporting",
    "args": ["--stable-release-mode"]
  },
  {
    "prefix": "android",
    "base": "fullscreen",
    "args": ["--enable-features=OverlayScrollbar", "--enable-threaded-compositing",
             "--enable-fixed-position-compositing", "--enable-prefer-compositing-to-lcd-text",
             "--enable-composited-scrolling-for-frames", "--enable-gesture-tap-highlight", "--enable-pinch",
             "--force-overlay-fullscreen-video", "--enable-overscroll-notifications",
             "--enable-viewport", "--disable-canvas-aa", "--disable-composited-antialiasing"]
  },
  {
    "prefix": "android",
    "base": "rootscroller",
    "args": ["--enable-features=OverlayScrollbar", "--enable-threaded-compositing",
             "--enable-fixed-position-compositing", "--enable-prefer-compositing-to-lcd-text",
             "--enable-composited-scrolling-for-frames", "--enable-gesture-tap-highlight", "--enable-pinch",
             "--force-overlay-fullscreen-video", "--enable-overscroll-notifications",
             "--enable-viewport", "--disable-canvas-aa", "--disable-composited-antialiasing"]
  },
  {
    "prefix": "android",
    "base": "url-bar",
    "args": ["--enable-features=OverlayScrollbar", "--enable-threaded-compositing",
             "--enable-fixed-position-compositing", "--enable-prefer-compositing-to-lcd-text",
             "--enable-composited-scrolling-for-frames", "--enable-gesture-tap-highlight", "--enable-pinch",
             "--force-overlay-fullscreen-video", "--enable-overscroll-notifications",
             "--enable-viewport", "--disable-canvas-aa", "--disable-composited-antialiasing"]
  },
  {
    "prefix": "android",
    "base": "frame-size",
    "args": ["--enable-features=OverlayScrollbar", "--enable-threaded-compositing",
             "--enable-fixed-position-compositing", "--enable-prefer-compositing-to-lcd-text",
             "--enable-composited-scrolling-for-frames", "--enable-gesture-tap-highlight", "--enable-pinch",
             "--force-overlay-fullscreen-video", "--enable-overscroll-notifications",
             "--enable-viewport", "--disable-canvas-aa", "--disable-composited-antialiasing"]
  },
  {
    "prefix": "media-gpu-accelerated",
    "base": "external/wpt/media-source",
    "args": ["--use-gpu-in-tests"]
  },
  {
    "prefix": "media-gpu-accelerated",
    "base": "media",
    "args": ["--use-gpu-in-tests"]
  },
  {
    "prefix": "stable",
    "base": "fast/css3-text/css3-text-decoration/stable",
    "args": ["--stable-release-mode"]
  },
  {
    "prefix": "stable",
    "base": "web-animations-api",
    "args": ["--stable-release-mode"]
  },
  {
    "prefix": "stable",
    "base": "http/tests/streams/transferable/enabled",
    "args": ["--stable-release-mode"]
  },
  {
    "prefix": "linux-subpixel",
    "base": "platform/linux/fast/text/subpixel",
    "args": ["--enable-webkit-text-subpixel-positioning"]
  },
  {
    "prefix": "threaded",
    "base": "printing",
    "args": ["--enable-threaded-compositing"]
  },
  {
    "prefix": "scroll_customization",
    "base": "fast/scroll-behavior",
    "args": ["--enable-blink-features=ScrollCustomization"]
  },
  {
    "prefix": "scroll_customization",
    "base": "fast/scrolling",
    "args": ["--enable-blink-features=ScrollCustomization"]
  },
  {
    "prefix": "scroll_customization",
    "base": "fast/events/touch",
    "args": ["--enable-blink-features=ScrollCustomization"]
  },
  {
    "prefix": "mse-1mb-buffers",
    "base": "http/tests/media/media-source/stream_memory_tests",
    "args": ["--mse-audio-buffer-size-limit-mb=1",
             "--mse-video-buffer-size-limit-mb=1"]
  },
  {
    "prefix": "threaded",
    "base": "fast/idle-callback",
    "args": ["--enable-threaded-compositing"]
  },
  {
    "prefix": "threaded",
    "base": "http/tests/devtools/tracing",
    "args": ["--enable-threaded-compositing"]
  },
  {
    "prefix": "composite-after-paint",
    "base": "compositing",
    "args": ["--enable-blink-features=CompositeAfterPaint"]
  },
  {
    "prefix": "composite-after-paint",
    "base": "paint",
    "args": ["--enable-blink-features=CompositeAfterPaint"]
  },
  {
    "prefix": "scalefactor200",
    "base": "fast/hidpi/static",
    "args": ["--force-device-scale-factor=2"]
  },
  {
    "prefix": "scalefactor200",
    "base": "external/wpt/css/css-paint-api/hidpi",
    "args": ["--force-device-scale-factor=2"]
  },
  {
    "prefix": "scalefactor200",
    "base": "http/tests/csspaint/hidpi",
    "args": ["--force-device-scale-factor=2"]
  },
  {
    "prefix": "scalefactor150",
    "base": "fast/hidpi/static",
    "args": ["--force-device-scale-factor=1.5"]
  },
  {
    "prefix": "scalefactor200withzoom",
    "base": "fast/hidpi/static",
    "args": ["--force-device-scale-factor=2", "--enable-use-zoom-for-dsf"]
  },
  {
    "prefix": "scalefactor150",
    "base": "fast/events/synthetic-events",
    "args": ["--force-device-scale-factor=1.5"]
  },
  {
    "prefix": "layout_ng",
    "base": "fast/block/basic",
    "args": ["--enable-blink-features=LayoutNG"]
  },
  {
    "prefix": "layout_ng",
    "base": "fast/block/margin-collapse",
    "args": ["--enable-blink-features=LayoutNG"]
  },
  {
    "prefix": "layout_ng",
    "base": "fast/block/float",
    "args": ["--enable-blink-features=LayoutNG"]
  },
  {
    "prefix": "layout_ng",
    "base": "external/wpt/css/CSS2/linebox",
    "args": ["--enable-blink-features=LayoutNG"]
  },
  {
    "prefix": "layout_ng",
    "base": "external/wpt/css/CSS2/normal-flow",
    "args": ["--enable-blink-features=LayoutNG"]
  },
  {
    "prefix": "layout_ng",
    "base": "external/wpt/css/CSS2/abspos",
    "args": ["--enable-blink-features=LayoutNG"]
  },
  {
    "prefix": "layout_ng",
    "base": "external/wpt/css/CSS2/positioning",
    "args": ["--enable-blink-features=LayoutNG"]
  },
  {
    "prefix": "layout_ng",
    "base": "external/wpt/css/CSS2/floats",
    "args": ["--enable-blink-features=LayoutNG"]
  },
  {
    "prefix": "layout_ng",
    "base": "external/wpt/css/CSS2/floats-clear",
    "args": ["--enable-blink-features=LayoutNG"]
  },
  {
    "prefix": "layout_ng",
    "base": "overflow",
    "args": ["--enable-blink-features=LayoutNG"]
  },
  {
    "prefix": "layout_ng",
    "base": "fast/inline",
    "args": ["--enable-blink-features=LayoutNG"]
  },
  {
    "prefix": "layout_ng",
    "base": "fast/writing-mode",
    "args": ["--enable-blink-features=LayoutNG"]
  },
  {
    "prefix": "layout_ng_experimental",
    "base": "external/wpt/css/css-multicol",
    "args": ["--enable-blink-features=LayoutNGBlockFragmentation"]
  },
  {
    "prefix": "layout_ng_experimental",
    "base": "fast/multicol",
    "args": ["--enable-blink-features=LayoutNGBlockFragmentation"]
  },
  {
    "prefix": "layout_ng_experimental",
    "base": "fast/pagination",
    "args": ["--enable-blink-features=LayoutNGBlockFragmentation"]
  },
  {
    "prefix": "layout_ng_experimental",
    "base": "fragmentation",
    "args": ["--enable-blink-features=LayoutNGBlockFragmentation"]
  },
  {
    "prefix": "layout_ng_experimental",
    "base": "printing",
    "args": ["--enable-blink-features=LayoutNGBlockFragmentation"]
  },
  {
    "prefix": "layout_ng_experimental",
    "base": "css3/flexbox",
    "args": ["--enable-blink-features=LayoutNGFlexBox"]
  },
  {
    "prefix": "layout_ng_experimental",
    "base": "external/wpt/css/css-flexbox",
    "args": ["--enable-blink-features=LayoutNGFlexBox"]
  },
  {
    "prefix": "layout_ng_experimental",
    "base": "external/wpt/html/rendering/non-replaced-elements/the-fieldset-and-legend-elements",
    "args": ["--enable-blink-features=LayoutNGFieldset"]
  },
  {
    "prefix": "layout_ng_experimental",
    "base": "fast/forms/fieldset",
    "args": ["--enable-blink-features=LayoutNGFieldset"]
  },
  {
    "prefix": "print_browser",
    "base": "print_testharness",
    "args": ["--enable-print-browser"]
  },
  {
    "prefix": "new-remote-playback-pipeline",
    "base": "media/remoteplayback",
    "args": ["--enable-features=NewRemotePlaybackPipeline"]
  },
  {
    "prefix": "new-remote-playback-pipeline",
    "base": "media/controls",
    "args": ["--enable-features=NewRemotePlaybackPipeline"]
  },
  {
    "prefix": "new-remote-playback-pipeline",
    "base": "external/wpt/remote-playback",
    "args": ["--enable-features=NewRemotePlaybackPipeline"]
  },
  {
    "prefix": "new-remote-playback-pipeline",
    "base": "http/tests/media/controls",
    "args": ["--enable-features=NewRemotePlaybackPipeline"]
  },
  {
    "prefix": "high-contrast-mode",
    "base": "paint/high-contrast-mode/image-filter-all",
    "args": ["--blink-settings=highContrastMode=3,highContrastImagePolicy=0"]
  },
  {
    "prefix": "high-contrast-mode",
    "base": "paint/high-contrast-mode/image-filter-none",
    "args": ["--blink-settings=highContrastMode=3,highContrastImagePolicy=1"]
  },
  {
    "prefix": "high-contrast-mode",
    "base": "paint/high-contrast-mode/image-filter-smart",
    "args": ["--blink-settings=highContrastMode=3,highContrastImagePolicy=2"]
  },
  {
    "prefix": "outofblink-cors",
    "base": "external/wpt/fetch",
    "args": ["--enable-features=OutOfBlinkCors,ServiceWorkerServicification"]
  },
  {
    "prefix": "outofblink-cors",
    "base": "external/wpt/http",
    "args": ["--enable-features=OutOfBlinkCors,ServiceWorkerServicification"]
  },
  {
    "prefix": "outofblink-cors",
    "base": "external/wpt/referrer-policy",
    "args": ["--enable-features=OutOfBlinkCors,ServiceWorkerServicification"]
  },
  {
    "prefix": "outofblink-cors",
    "base": "external/wpt/service-workers",
    "args": ["--enable-features=OutOfBlinkCors,ServiceWorkerServicification"]
  },
  {
    "prefix": "outofblink-cors",
    "base": "external/wpt/xhr",
    "args": ["--enable-features=OutOfBlinkCors,ServiceWorkerServicification"]
  },
  {
    "prefix": "outofblink-cors",
    "base": "http/tests/fetch",
    "args": ["--enable-features=OutOfBlinkCors,ServiceWorkerServicification"]
  },
  {
    "prefix": "outofblink-cors",
    "base": "http/tests/navigation",
    "args": ["--enable-features=OutOfBlinkCors,ServiceWorkerServicification"]
  },
  {
    "prefix": "outofblink-cors",
    "base": "http/tests/security",
    "args": ["--enable-features=OutOfBlinkCors,ServiceWorkerServicification"]
  },
  {
    "prefix": "outofblink-cors",
    "base": "http/tests/xmlhttprequest",
    "args": ["--enable-features=OutOfBlinkCors,ServiceWorkerServicification"]
  },
  {
    "prefix": "outofblink-cors-ns",
    "base": "external/wpt/fetch",
    "args": ["--enable-features=OutOfBlinkCors,NetworkService"]
  },
  {
    "prefix": "outofblink-cors-ns",
    "base": "external/wpt/http",
    "args": ["--enable-features=OutOfBlinkCors,NetworkService"]
  },
  {
    "prefix": "outofblink-cors-ns",
    "base": "external/wpt/referrer-policy",
    "args": ["--enable-features=OutOfBlinkCors,NetworkService"]
  },
  {
    "prefix": "outofblink-cors-ns",
    "base": "external/wpt/service-workers",
    "args": ["--enable-features=OutOfBlinkCors,NetworkService"]
  },
  {
    "prefix": "outofblink-cors-ns",
    "base": "external/wpt/xhr",
    "args": ["--enable-features=OutOfBlinkCors,NetworkService"]
  },
  {
    "prefix": "outofblink-cors-ns",
    "base": "http/tests/fetch",
    "args": ["--enable-features=OutOfBlinkCors,NetworkService"]
  },
  {
    "prefix": "outofblink-cors-ns",
    "base": "http/tests/navigation",
    "args": ["--enable-features=OutOfBlinkCors,NetworkService"]
  },
  {
    "prefix": "outofblink-cors-ns",
    "base": "http/tests/security",
    "args": ["--enable-features=OutOfBlinkCors,NetworkService"]
  },
  {
    "prefix": "outofblink-cors-ns",
    "base": "http/tests/xmlhttprequest",
    "args": ["--enable-features=OutOfBlinkCors,NetworkService"]
  },
  {
    "prefix": "presentation",
    "base": "receiver",
    "args": ["--force-presentation-receiver-for-testing"]
  },
  {
    "prefix": "sharedarraybuffer",
    "base": "external/wpt/html/infrastructure/safe-passing-of-structured-data/shared-array-buffers",
    "args": ["--js-flags=--harmony-sharedarraybuffer",
             "--enable-blink-features=SharedArrayBuffer"]
  },
  {
    "prefix": "longtask-v2",
    "base": "http/tests/performance-timing/longtask-v2",
    "args": ["--enable-blink-features=LongTaskV2"]
  },
  {
    "prefix": "paint-timing",
    "base": "external/wpt/paint-timing",
    "args": ["--enable-threaded-compositing"]
  },
  {
    "prefix": "cors-rfc1918",
    "base": "http/tests/security/cors-rfc1918",
    "args": ["--enable-blink-features=CorsRFC1918"]
  },
  {
    "prefix": "single-renderer-process",
    "base": "external/wpt/longtask-timing/shared-renderer",
    "args": ["--renderer-process-limit=1"]
  },
  {
    "prefix": "reporting-api",
    "base": "external/wpt/content-security-policy/reporting-api",
    "args": ["--enable-features=Reporting"]
  },
  {
    "prefix": "network-error-logging",
    "base": "external/wpt/network-error-logging",
    "args": ["--enable-features=Reporting,NetworkErrorLogging"]
  },
  {
    "prefix": "mouseevent_fractional",
    "base": "fast/events",
    "args": ["--enable-blink-features=FractionalMouseEvent"]
  },
  {
    "prefix": "fractional_scrolling_threaded",
    "base": "fast/scrolling",
    "args": ["--enable-blink-features=FractionalScrollOffsets", "--enable-threaded-compositing"]
  },
  {
    "prefix": "fractional_scrolling",
    "base": "fast/scrolling",
    "args": ["--enable-blink-features=FractionalScrollOffsets"]
  },
  {
    "prefix": "speech-with-unified-autoplay",
    "base": "external/wpt/speech-api",
    "args": ["--autoplay-policy=document-user-activation-required"]
  },
  {
    "prefix": "unified-autoplay",
    "base": "external/wpt/feature-policy",
    "args": ["--autoplay-policy=document-user-activation-required"]
  },
  {
    "prefix": "threaded",
    "base": "external/wpt/feature-policy/experimental-features",
    "args": ["--enable-threaded-compositing"]
  },
  {
    "prefix": "sampling-heap-profiler",
    "base": "inspector-protocol/memory",
    "args": ["--sampling-heap-profiler"]
  },
  {
    "prefix": "sxg-with-network-service",
    "base": "http/tests/loading/sxg",
    "args": ["--enable-features=NetworkService"]
  },
  {
    "prefix": "sxg-with-network-service",
    "base": "http/tests/devtools/sxg",
    "args": ["--enable-features=NetworkService"]
  },
  {
    "prefix": "sxg-with-network-service",
    "base": "external/wpt/signed-exchange",
    "args": ["--enable-features=NetworkService"]
  },
  {
    "prefix": "sxg-origin-trial",
    "base": "http/tests/loading/sxg",
    "args": ["--stable-release-mode",
             "--enable-features=SignedHTTPExchangeOriginTrial"]
  },
  {
    "prefix": "sxg-origin-trial-with-network-service",
    "base": "http/tests/loading/sxg",
    "args": ["--stable-release-mode",
             "--enable-features=SignedHTTPExchangeOriginTrial,NetworkService"]
  },
  {
    "prefix": "disabled-service-worker-servicification",
    "base": "http/tests/serviceworker",
    "args": ["--disable-features=ServiceWorkerServicification,NetworkService"]
  },
  {
    "prefix": "disabled-service-worker-servicification",
    "base": "external/wpt/service-workers/service-worker",
    "args": ["--disable-features=ServiceWorkerServicification,NetworkService"]
  },
  {
    "prefix": "omt-worker-fetch",
    "base": "external/wpt/mixed-content/classic-data-worker-fetch",
    "args": ["--enable-features=OffMainThreadDedicatedWorkerScriptFetch,OffMainThreadSharedWorkerScriptFetch,NetworkService"]
  },
  {
    "prefix": "omt-worker-fetch",
    "base": "external/wpt/mixed-content/module-data-worker-import",
    "args": ["--enable-features=OffMainThreadDedicatedWorkerScriptFetch,OffMainThreadSharedWorkerScriptFetch,NetworkService"]
  },
  {
    "prefix": "omt-worker-fetch",
    "base": "external/wpt/mixed-content/module-worker-top-level",
    "args": ["--enable-features=OffMainThreadDedicatedWorkerScriptFetch,OffMainThreadSharedWorkerScriptFetch,NetworkService"]
  },
  {
    "prefix": "omt-worker-fetch",
    "base": "external/wpt/mixed-content/worker-request",
    "args": ["--enable-features=OffMainThreadDedicatedWorkerScriptFetch,OffMainThreadSharedWorkerScriptFetch,NetworkService"]
  },
  {
    "prefix": "omt-worker-fetch",
    "base": "external/wpt/referrer-policy",
    "args": ["--enable-features=OffMainThreadDedicatedWorkerScriptFetch,OffMainThreadSharedWorkerScriptFetch,NetworkService"]
  },
  {
    "prefix": "omt-worker-fetch",
    "base": "external/wpt/upgrade-insecure-requests",
    "args": ["--enable-features=OffMainThreadDedicatedWorkerScriptFetch,OffMainThreadSharedWorkerScriptFetch,NetworkService"]
  },
  {
    "prefix": "omt-worker-fetch",
    "base": "external/wpt/workers",
    "args": ["--enable-features=OffMainThreadDedicatedWorkerScriptFetch,OffMainThreadSharedWorkerScriptFetch,NetworkService"]
  },
  {
    "prefix": "omt-worker-fetch",
    "base": "fast/workers",
    "args": ["--enable-features=OffMainThreadDedicatedWorkerScriptFetch,OffMainThreadSharedWorkerScriptFetch,NetworkService"]
  },
  {
    "prefix": "omt-worker-fetch",
    "base": "http/tests/workers",
    "args": ["--enable-features=OffMainThreadDedicatedWorkerScriptFetch,OffMainThreadSharedWorkerScriptFetch,NetworkService"]
  },
  {
    "prefix": "webrtc-wpt-plan-b",
    "base": "external/wpt/webrtc",
    "args": ["--disable-features=RTCUnifiedPlanByDefault"]
  },
  {
    "prefix": "video-surface-layer",
    "base": "media",
    "args": ["--enable-features=UseSurfaceLayerForVideo",
             "--enable-display-compositor-pixel-dump"]
  },
  {
    "prefix": "user-activation-v2",
    "base": "fast/dom/Window",
    "args": ["--enable-features=UserActivationV2"]
  },
  {
    "prefix": "user-activation-v2",
    "base": "fast/events",
    "args": ["--enable-features=UserActivationV2"]
  },
  {
    "prefix": "user-activation-v2",
    "base": "fullscreen",
    "args": ["--enable-features=UserActivationV2"]
  },
  {
    "prefix": "user-activation-v2",
    "base": "gamepad",
    "args": ["--enable-features=UserActivationV2"]
  },
  {
    "prefix": "user-activation-v2",
    "base": "http/tests/media/autoplay",
    "args": ["--enable-features=UserActivationV2"]
  },
  {
    "prefix": "display-compositor-pixel-dump",
    "base": "fast/canvas/display-compositor-pixel-dump",
    "args": ["--enable-display-compositor-pixel-dump",
             "--enable-accelerated-2d-canvas"]
  },
  {
    "prefix": "mojo-blob-urls",
    "base": "external/wpt/FileAPI/url",
    "args": ["--enable-features=MojoBlobURLs"]
  },
  {
    "prefix": "lazyload-image",
    "base": "http/tests/lazyload",
    "args": ["--enable-features=LazyImageLoading"]
  },
  {
    "prefix": "origin-policy",
    "base": "external/wpt/origin-policy",
    "args": ["--enable-features=OriginPolicy"]
  },
  {
    "prefix" : "lazyload-policy",
    "base": "external/wpt/feature-policy/experimental-features/lazyload",
    "args": ["--enable-blink-features=LazyFrameLoading,LazyImageLoading"]
  },
  {
    "prefix": "display-lock",
    "base": "display-lock",
    "args": ["--enable-blink-features=DisplayLocking"]
  },
  {
    "prefix" : "autoupgrade-optionally-blockable-mixed-content",
    "base": "http/tests/mixed-autoupgrade/optionally",
    "args": ["--enable-features=AutoupgradeMixedContent<AU --force-fieldtrials=AU/G1 --force-fieldtrial-params=AU.G1:mode/optionally-blockable"]
  },
  {
    "prefix" : "autoupgrade-blockable-mixed-content",
    "base": "http/tests/mixed-autoupgrade/blockable",
    "args": ["--enable-features=AutoupgradeMixedContent<AU --force-fieldtrials=AU/G1 --force-fieldtrial-params=AU.G1:mode/blockable"]
  },
  {
    "prefix" : "autoupgrade-all-mixed-content",
    "base": "http/tests/mixed-autoupgrade/all",
    "args": ["--enable-features=AutoupgradeMixedContent"]
  },
  {
    "prefix": "webgl-extra-video-texture-metadata",
    "base": "fast/webgl/video-metadata",
    "args": ["--enable-blink-features=ExtraWebGLVideoTextureMetadata"]
  },
  {
    "prefix": "site-isolated-code-cache",
    "base": "http/tests/devtools/isolated-code-cache",
    "args": ["--enable-features=IsolatedCodeCache",
             "--site-per-process"]
  },
  {
    "prefix": "wasm-site-isolated-code-cache",
    "base": "http/tests/devtools/wasm-isolated-code-cache",
    "args": ["--enable-features=IsolatedCodeCache,WasmCodeCache",
             "--disable-features=WebAssemblyBaseline",
             "--site-per-process"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "http/tests/devtools/isolated-code-cache",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "external/wpt/FileAPI/url/multi-global-origin-serialization.sub.html",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "external/wpt/content-security-policy/securitypolicyviolation/upgrade-insecure-requests-reporting.https.html",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "external/wpt/dom/events/EventListener-addEventListener.sub.window.js",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "external/wpt/dom/events/EventListener-incumbent-global-1.sub.html",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "external/wpt/dom/events/EventListener-incumbent-global-2.sub.html",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "http/tests/dom/EventListener-incumbent-global-1.html",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "http/tests/dom/EventListener-incumbent-global-2.html",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "external/wpt/html/browsers/history/the-location-interface/allow_prototype_cycle_through_location.sub.html",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "external/wpt/html/browsers/history/the-location-interface/location-prototype-setting-same-origin-domain.sub.html",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "external/wpt/html/browsers/origin/cross-origin-objects/cross-origin-objects-on-new-window.html",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "external/wpt/html/browsers/origin/cross-origin-objects/cross-origin-objects.html",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "external/wpt/html/browsers/origin/relaxing-the-same-origin-restriction",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "external/wpt/html/browsers/the-windowproxy-exotic-object/windowproxy-prototype-setting-same-origin-domain.sub.html",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "external/wpt/html/infrastructure/safe-passing-of-structured-data/shared-array-buffers/window-domain-success.sub.html",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "external/wpt/html/infrastructure/safe-passing-of-structured-data/shared-array-buffers/window-similar-but-cross-origin-success.sub.html",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "external/wpt/html/syntax/parsing/html5lib_tests19.html",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "external/wpt/html/user-activation/message-event-activation-api-iframe-cross-origin.sub.tentative.html",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "external/wpt/payment-request/allowpaymentrequest/setting-allowpaymentrequest-timing.https.sub.html",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "external/wpt/wasm/serialization/module/window-domain-success.sub.html",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "external/wpt/wasm/serialization/module/window-similar-but-cross-origin-success.sub.html",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "http/tests/devtools/debugger/fetch-breakpoints.js",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "http/tests/devtools/oopif/oopif-storage.js",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "http/tests/images/image-decode-in-frame.html",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "http/tests/inspector-protocol/access-inspected-object.js",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "http/tests/inspector-protocol/network/navigation-blocking-xorigin-iframe.js",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "http/tests/inspector-protocol/request-mixed-content-status-blockable.js",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "http/tests/inspector-protocol/request-mixed-content-status-none.js",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "http/tests/inspector-protocol/request-mixed-content-status-optionally-blockable.js",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "http/tests/loading/bad-server-subframe.html",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "http/tests/local/drag-over-remote-content.html",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "http/tests/media/autoplay/document-user-activation-feature-policy-iframe-no-gesture.html",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "http/tests/misc/iframe-script-modify-attr.html",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "http/tests/misc/webtiming-no-origin.html",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "http/tests/printing/cross-site-frame-scrolled.html",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "http/tests/printing/cross-site-frame.html",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "http/tests/security/frameNavigation/xss-DENIED-top-navigation-without-user-gesture.html",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "http/tests/security/mixedContent/insecure-iframe-in-main-frame.html",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "http/tests/security/upgrade-insecure-requests/iframe-upgrade.https.html",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "http/tests/text-autosizing/narrow-iframe.html",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "http/tests/text-autosizing/wide-iframe.html",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "not-site-per-process",
    "base": "http/tests/webaudio/autoplay-crossorigin.html",
    "args": ["--disable-site-isolation-trials"]
  },
  {
    "prefix": "streaming-preload",
    "base": "http/tests/fetch",
    "args": ["--enable-features=ScriptStreamingOnPreload"]
  },
  {
    "prefix": "streaming-preload",
    "base": "external/wpt/html/semantics/scripting-1",
    "args": ["--enable-features=ScriptStreamingOnPreload"]
  },
  {
    "prefix": "streams-native",
    "base": "external/wpt/streams",
    "args": ["--enable-blink-features=StreamsNative", "--enable-features=BlinkHeapUnifiedGarbageCollection"]
  },
  {
    "prefix": "streams-native",
    "base": "http/tests/streams",
    "args": ["--enable-blink-features=StreamsNative", "--enable-features=BlinkHeapUnifiedGarbageCollection"]
  },
  {
    "prefix": "spatial-navigation-force-outline",
    "base": "fast/spatial-navigation",
    "args": ["--enable-blink-features=SpatialNavigationForcesOutline"]
  },
  {
    "prefix": "bidi-caret-affinity",
    "base": "editing/selection/modify_move",
    "args": ["--enable-blink-features=BidiCaretAffinity,EditingNG"]
  },
  {
    "prefix": "freeze-frames",
    "base": "external/wpt/lifecycle",
    "args": ["--enable-features=FreezeFramesOnVisibility"]
  },
  {
    "prefix": "feature-policy-for-sandbox",
    "base": "http/tests/navigation",
    "args": ["--enable-blink-features=FeaturePolicyForSandbox"]
  },
  {
    "prefix": "feature-policy-for-sandbox",
    "base": "http/tests/security",
    "args": ["--enable-blink-features=FeaturePolicyForSandbox"]
  },
  {
    "prefix": "feature-policy-for-sandbox",
    "base": "mhtml",
    "args": ["--enable-blink-features=FeaturePolicyForSandbox"]
  }
]