cc: Add OutputSurface state snapshots.

content/browser/compositor/browser_compositor_output_surface.cc

Index: content/browser/compositor/browser_compositor_output_surface.cc
diff --git a/content/browser/compositor/browser_compositor_output_surface.cc b/content/browser/compositor/browser_compositor_output_surface.cc
index b93b865efe759fa4788091c0b7df3c096926a9b8..ad2e0f535de678ad7e010b703da25e324e159a6d 100644
--- a/content/browser/compositor/browser_compositor_output_surface.cc
+++ b/content/browser/compositor/browser_compositor_output_surface.cc
@@ -60,6 +60,8 @@ BrowserCompositorOutputSurface::~BrowserCompositorOutputSurface() {
 void BrowserCompositorOutputSurface::OnUpdateVSyncParametersFromGpu(
     base::TimeTicks timebase,
     base::TimeDelta interval) {
+  last_vsync_timebase_ = timebase;
+  last_vsync_interval_ = interval;

[danakj, 2016/11/01 23:33:01]

shouldnt this be after the is_zero adjustment

[reveman, 2016/11/02 00:37:05]

Done.

   if (interval.is_zero()) {
     // TODO(brianderson): We should not be receiving 0 intervals.
     interval = cc::BeginFrameArgs::DefaultInterval();