Add duration estimation data to RenderingStats.

cc/debug/rendering_stats.h

 // Copyright 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.
 
 #ifndef CC_DEBUG_RENDERING_STATS_H_
 #define CC_DEBUG_RENDERING_STATS_H_
 
+#include <list>
+
 #include "base/basictypes.h"
 #include "base/time/time.h"
 #include "cc/base/cc_export.h"
 #include "cc/debug/traced_value.h"
 
 namespace cc {
 
 struct CC_EXPORT MainThreadRenderingStats {
   // Note: when adding new members, please remember to update EnumerateFields
   // and Add in rendering_stats.cc.
 
   int64 frame_count;
   base::TimeDelta paint_time;
   int64 painted_pixel_count;
   base::TimeDelta record_time;
   int64 recorded_pixel_count;
 
   MainThreadRenderingStats();
   scoped_refptr<base::debug::ConvertableToTraceFormat> AsTraceableData() const;
   void Add(const MainThreadRenderingStats& other);
 };
 
+// Stores a sequence of TimeDelta objects.
+class CC_EXPORT ImplThreadRenderingStatsAccumulated {

[ernstm, 2014/07/14 13:12:39]

If we expect to use more of these list values in the future, then I would prefer
a more generic name (they could be used in MainThreadRenderingStats as well). It
is basically a list of TimeDeltas; Maybe call it TimeDeltaList?

[Dominik Grewe, 2014/07/14 13:37:52]

Good point. Done.

+ public:
+  void Append(base::TimeDelta value);
+  scoped_ptr<base::Value> AsValueInMilliseconds() const;
+  void Add(const ImplThreadRenderingStatsAccumulated& other);
+
+ private:
+  std::list<base::TimeDelta> values;
+};
+
 struct CC_EXPORT ImplThreadRenderingStats {
   // Note: when adding new members, please remember to update EnumerateFields
   // and Add in rendering_stats.cc.
 
   int64 frame_count;
   base::TimeDelta rasterize_time;
   base::TimeDelta analysis_time;
   int64 rasterized_pixel_count;
   int64 visible_content_area;
   int64 approximated_visible_content_area;
 
+  ImplThreadRenderingStatsAccumulated draw_duration;
+  ImplThreadRenderingStatsAccumulated draw_duration_estimate;
+  ImplThreadRenderingStatsAccumulated begin_main_frame_to_commit_duration;
+  ImplThreadRenderingStatsAccumulated
+      begin_main_frame_to_commit_duration_estimate;
+  ImplThreadRenderingStatsAccumulated commit_to_activate_duration;
+  ImplThreadRenderingStatsAccumulated commit_to_activate_duration_estimate;
+
   ImplThreadRenderingStats();
   scoped_refptr<base::debug::ConvertableToTraceFormat> AsTraceableData() const;
   void Add(const ImplThreadRenderingStats& other);
 };
 
 struct CC_EXPORT RenderingStats {
   MainThreadRenderingStats main_stats;
   ImplThreadRenderingStats impl_stats;
 
   // Add fields of |other| to the fields in this structure.
   void Add(const RenderingStats& other);
 };
 
 }  // namespace cc
 
 #endif  // CC_DEBUG_RENDERING_STATS_H_