Add supported sized formats by CHROMIUM_ycbcr_420v/422_image

BUG=657532
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel

Review-Url: https://codereview.chromium.org/2458423002
Cr-Commit-Position: refs/heads/master@{#428930}
2 files changed