cc: Changed total_pixels_rasterized to be a return value

cc/resources/picture_pile_impl.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_RESOURCES_PICTURE_PILE_IMPL_H_
 #define CC_RESOURCES_PICTURE_PILE_IMPL_H_
 
 #include <list>
 #include <map>
 
@@ skipping 12 matching lines @@
   static scoped_refptr<PicturePileImpl> CreateFromOther(
       const PicturePileBase* other,
       bool enable_lcd_text);
 
   // Get paint-safe version of this picture for a specific thread.
   PicturePileImpl* GetCloneForDrawingOnThread(unsigned thread_index) const;
 
   // Raster a subrect of this PicturePileImpl into the given canvas.
   // It's only safe to call paint on a cloned version.
   // It is assumed that contents_scale has already been applied to this canvas.
-  void Raster(
+  // Return value is the total number of pixels rasterized.
+  int64 Raster(
       SkCanvas* canvas,
       gfx::Rect canvas_rect,
-      float contents_scale,
-      int64* total_pixels_rasterized);
+      float contents_scale);
 
   void GatherPixelRefs(
       gfx::Rect content_rect,
       float contents_scale,
       std::list<skia::LazyPixelRef*>& pixel_refs);
 
   skia::RefPtr<SkPicture> GetFlattenedPicture();
 
   struct Analysis {
     Analysis();
@@ skipping 40 matching lines @@
   // instance.  This member variable must be last so that other member
   // variables have already been initialized and can be clonable.
   const ClonesForDrawing clones_for_drawing_;
 
   DISALLOW_COPY_AND_ASSIGN(PicturePileImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_PICTURE_PILE_IMPL_H_