Adding hooks for gathering total pixels painted and rasterized stats.

cc/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_RENDERING_STATS_H_
 #define CC_RENDERING_STATS_H_
 
+#include "base/basictypes.h"
+#include "cc/cc_export.h"
+
 namespace cc {
 
-struct RenderingStats {
+struct CC_EXPORT RenderingStats {
     // FIXME: Rename these to animationFrameCount and screenFrameCount, crbug.com/138641.
-    int numAnimationFrames;
-    int numFramesSentToScreen;
-    int droppedFrameCount;
+    int64 numAnimationFrames;
+    int64 numFramesSentToScreen;
+    int64 droppedFrameCount;
     double totalPaintTimeInSeconds;
     double totalRasterizeTimeInSeconds;
     double totalCommitTimeInSeconds;
     size_t totalCommitCount;
-    size_t numImplThreadScrolls;
-    size_t numMainThreadScrolls;
+    int64 totalPixelsPainted;
+    int64 totalPixelsRasterized;
+    int64 numImplThreadScrolls;
+    int64 numMainThreadScrolls;
 
-    RenderingStats()
-        : numAnimationFrames(0)
-        , numFramesSentToScreen(0)
-        , droppedFrameCount(0)
-        , totalPaintTimeInSeconds(0)
-        , totalRasterizeTimeInSeconds(0)
-        , totalCommitTimeInSeconds(0)
-        , totalCommitCount(0)
-        , numImplThreadScrolls(0)
-        , numMainThreadScrolls(0)
-    {
-    }
+    RenderingStats();
 };
 
-}
+}  // namespace cc
 
 #endif  // CC_RENDERING_STATS_H_