telemetry: Partially switch smoothnes measurement to timeline.

- Switched main thread and impl thread stats collection to timeline.
- Made SmoothnessMetrics work with stats lists
- Issue trace events for rendering stats in a separate function
- Issue trace events for rendering stats from SingleThreadProxy and RenderWidget
- Switch RenderWidget from RenderingStats to RenderingStastInstrumentation
- Added missing image_gathering_time output to MainThreadRenderingStats
- Updated smoothness_unittest to use trace events

R=tonyg@chromium.org
BUG=264308,266095

Review URL: https://chromiumcodereview.appspot.com/22870018

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@219413 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 12 insertions, 3 deletions

diff --git a/cc/debug/rendering_stats_instrumentation.h b/cc/debug/rendering_stats_instrumentation.h
index a7f9b308..5f74f9e 100644
--- a/cc/debug/rendering_stats_instrumentation.h
+++ b/cc/debug/rendering_stats_instrumentation.h
@@ -30,12 +30,21 @@ class CC_EXPORT RenderingStatsInstrumentation {
   RenderingStats GetRenderingStats();
 
   // Add current main thread rendering stats to accumulator and
-  // clear current stats
+  // clear current stats.
   void AccumulateAndClearMainThreadStats();
   // Add current impl thread rendering stats to accumulator and
-  // clear current stats
+  // clear current stats.
   void AccumulateAndClearImplThreadStats();
 
+  // Issue trace event for current main thread rendering stats.
+  void IssueTraceEventForMainThreadStats() {
+    main_stats_.IssueTraceEvent();
+  }
+  // Issue trace event for current impl thread rendering stats.
+  void IssueTraceEventForImplThreadStats() {
+    impl_stats_.IssueTraceEvent();
+  }
+
   // Read and write access to the record_rendering_stats_ flag is not locked to
   // improve performance. The flag is commonly turned off and hardly changes
   // it's value during runtime.
@@ -49,7 +58,7 @@ class CC_EXPORT RenderingStatsInstrumentation {
   base::TimeDelta EndRecording(base::TimeTicks start_time) const;
 
   void IncrementAnimationFrameCount();
-  void IncrementScreenFrameCount(int64 count);
+  void IncrementScreenFrameCount(int64 count, bool main_thread);
   void IncrementDroppedFrameCount(int64 count);
 
   void AddCommit(base::TimeDelta duration);