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We often do not know the vsync_interval_ accurately, so call
GetVSyncParameters to minimize clock skew between predicted vblank and
actual vblank. This more accurate timebase gets plumbed up into
DisplayScheduler and will give us more time to draw a frame.

Change-Id: I30fe04eb36149c0cfb715a55dd523c8b5e20ecb6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1808151Reviewed-by: Peng Huang <penghuang@chromium.org>
Commit-Queue: Jonathan Backer <backer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#697993}