[WIP] cc: Plumb frame timing info without using a commit.

content/renderer/gpu/render_widget_compositor.cc

Index: content/renderer/gpu/render_widget_compositor.cc
diff --git a/content/renderer/gpu/render_widget_compositor.cc b/content/renderer/gpu/render_widget_compositor.cc
index 06adef191970c72be802f8817a28b12aa97acec8..5c0c5903a11cfdf83f7d19996875633dac450b72 100644
--- a/content/renderer/gpu/render_widget_compositor.cc
+++ b/content/renderer/gpu/render_widget_compositor.cc
@@ -959,6 +959,12 @@ void RenderWidgetCompositor::DidAbortSwapBuffers() {
   widget_->OnSwapBuffersAborted();
 }
 
+void RenderWidgetCompositor::RecordFrameTimingEvents(
+    scoped_ptr<cc::FrameTimingTracker::CompositeTimingSet> composite_events,
+    scoped_ptr<cc::FrameTimingTracker::MainFrameTimingSet> main_frame_events) {
+  // TODO(vmpstr): Record the events.

[MikeB, 2015/06/01 19:29:55]

Recording the events should be (or similar to) 

https://codereview.chromium.org/1137823002/diff/60001/content/renderer/gpu/re...

+}
+
 void RenderWidgetCompositor::RateLimitSharedMainThreadContext() {
   cc::ContextProvider* provider =
       compositor_deps_->GetSharedMainThreadContextProvider();