| <!DOCTYPE html> |
| <style> |
| html { |
| scroll-blocks-on: start-touch; |
| } |
| iframe { |
| position: absolute; |
| height: 15px; /* large enough to prevent scrollbars */ |
| width: 100px; |
| border: 0; |
| } |
| #f1 { |
| top: 20px; |
| } |
| #f2 { |
| top: 40px; |
| } |
| #f3 { |
| top: 60px; |
| } |
| #f4 { |
| top: 80px; |
| } |
| </style> |
| <iframe id=f1 srcdoc="<style>html { scroll-blocks-on: none; }</style>"></iframe> |
| <iframe id=f2 srcdoc="<style>html { scroll-blocks-on: start-touch; }</style>"></iframe> |
| <iframe id=f3 srcdoc="<style></style>"></iframe> |
| <iframe id=f4 srcdoc="<style>html { scroll-blocks-on: start-touch scroll-event; }</style>"></iframe> |
| <script> |
| onload = function() { |
| if (window.testRunner) { |
| testRunner.dumpAsText(); |
| var output = "Verify that an iframe will be promoted to a composited layer only when it has additional scroll-blocks-on bits.\n\n"; |
| output += internals.layerTreeAsText(document, internals.LAYER_TREE_INCLUDES_SCROLL_BLOCKS_ON); |
| testRunner.setCustomTextOutput(output); |
| } |
| }; |
| </script> |
