cc: Improve frame/commit accounting

tools/gpu/gpu_tools/texture_upload_benchmark.py

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 from chrome_remote_control import multi_page_benchmark
 from gpu_tools import scrolling_benchmark
 
 class TextureUploadBenchmark(scrolling_benchmark.ScrollingBenchmark):
   def MeasurePage(self, page, tab):
     rendering_stats_deltas = self.ScrollPageFully(page, tab)
 
     if (('totalCommitCount' not in rendering_stats_deltas)
         or rendering_stats_deltas['totalCommitCount'] == 0) :
       averageCommitTimeMs = 0
     else :
       averageCommitTimeMs = (
           1000 * rendering_stats_deltas['totalCommitTimeInSeconds'] /
           rendering_stats_deltas['totalCommitCount'])
 
+    commitEfficiencyActive = (
+        rendering_stats_deltas["totalCommitCount"] /
+        float(rendering_stats_deltas["numActiveCSyncs"]))
+
+    commitEfficiency = (
+        rendering_stats_deltas["totalCommitCount"] /
+        float(rendering_stats_deltas["numCSyncs"]))
+
     return {
       'texture_upload_count': rendering_stats_deltas['textureUploadCount'],
-      'average_commit_time_ms': averageCommitTimeMs
+      'average_commit_time_ms': averageCommitTimeMs,
+      'commit_efficiency_active': commitEfficiencyActive,
+      'commit_efficiency_total': commitEfficiency,
     }
 
 def Main():
   return multi_page_benchmark.Main(TextureUploadBenchmark())