GitLab

Wrap usage of ContentVideoView in an AndroidOverlay interface.  This
doesn't change the functionality, but starts to move AVDA towards
using AndroidOverlays rather than hard-coding CVV.

Much of Allocate/DeallocateSurface could be moved from
AVDACodecAllocator to ContentVideoViewOverlay.  However, to keep the
size of this change small, it isn't yet.

There shouldn't be any functional difference with this CL.

BUG=667950

CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.android:android_optional_gpu_tests_rel;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/2692863011
Cr-Commit-Position: refs/heads/master@{#456135}