Adding hooks for gathering total pixels painted and rasterized stats.

cc/canvas_layer_texture_updater.cc

 // Copyright 2011 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.
 
 
 #include "config.h"
 
 #include "CanvasLayerTextureUpdater.h"
 
 #include "CCRenderingStats.h"
@@ skipping 39 matching lines @@
     SkRect layerSkRect = SkRect::MakeXYWH(layerRect.x(), layerRect.y(), layerRect.width(), layerRect.height());
     canvas->drawRect(layerSkRect, paint);
     canvas->clipRect(layerSkRect);
 
     FloatRect opaqueLayerRect;
     double paintBeginTime = monotonicallyIncreasingTime();
     m_painter->paint(canvas, layerRect, opaqueLayerRect);
     stats.totalPaintTimeInSeconds += monotonicallyIncreasingTime() - paintBeginTime;
     canvas->restore();
 
+    stats.totalPixelsPainted += contentRect.width() * contentRect.height();
+
     FloatRect opaqueContentRect = opaqueLayerRect;
     opaqueContentRect.scale(contentsWidthScale, contentsHeightScale);
     resultingOpaqueRect = enclosedIntRect(opaqueContentRect);
 
     m_contentRect = contentRect;
 }
 
 } // namespace cc