Adding hooks for gathering total pixels painted and rasterized stats.

cc/bitmap_skpicture_canvas_layer_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 "cc/bitmap_skpicture_canvas_layer_updater.h"
 
 #include "base/time.h"
 #include "cc/layer_painter.h"
@@ skipping 49 matching lines @@
 }
 
 void BitmapSkPictureCanvasLayerUpdater::paintContentsRect(SkCanvas* canvas, const IntRect& sourceRect, RenderingStats& stats)
 {
     // Translate the origin of contentRect to that of sourceRect.
     canvas->translate(contentRect().x() - sourceRect.x(),
                       contentRect().y() - sourceRect.y());
     base::TimeTicks rasterizeBeginTime = base::TimeTicks::Now();
     drawPicture(canvas);
     stats.totalRasterizeTimeInSeconds += (base::TimeTicks::Now() - rasterizeBeginTime).InSecondsF();
+    stats.totalPixelsRasterized += sourceRect.width() * sourceRect.height();
 }
 
 } // namespace cc