Revert of "Route DXGI Frame Statistics to VSyncProvider"

This reverts the following commits related to this change.
http://crrev.com/b5df120a181df5743a1ebd5f7cc6537a00097ee3
http://crrev.com/bc7ba6d60345cbd6b1c55945238e474b0164bee8
http://crrev.com/d5c055882dc5bf06a8930c6e7d6f52dee3489560
http://crrev.com/dd1d76988f2d7ae8f76a610bcbb03243e244436c

This was an attempt to share eglGetSyncValuesCHROMIUM
based VSyncProvider between Linux and Windows.
The feature wasn't working anyway because eglGetSyncValuesCHROMIUM
had to be reverted on ANGLE side due to video playback
smoothness regression that it caused.

That approach is now irrelevant because we are going
to provide a mechanism for delivering a true GPU VSync
signal.

BUG=614147
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
NOTRY=true

Review-Url: https://codereview.chromium.org/2696203004
Cr-Commit-Position: refs/heads/master@{#451120}
5 files changed