cc: Remove texture scaling and clear edge texels of a layer.

cc/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_PICTURE_PILE_IMPL_H_
 #define CC_PICTURE_PILE_IMPL_H_
 
 #include <list>
 #include <map>
 
@@ skipping 14 matching lines @@
   PicturePileImpl* GetCloneForDrawingOnThread(base::Thread*);
 
   // Clone a paint-safe version of this picture.
   scoped_refptr<PicturePileImpl> CloneForDrawing() 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 contentsScale has already been applied to this canvas.
   void Raster(
       SkCanvas* canvas,
-      gfx::Rect content_rect,
+      gfx::Rect canvas_rect,
       float contents_scale,
       int64* total_pixels_rasterized);
 
   void GatherPixelRefs(
       gfx::Rect content_rect,
       float contents_scale,
       std::list<skia::LazyPixelRef*>& pixel_refs);
 
   void PushPropertiesTo(PicturePileImpl* other);
 
@@ skipping 16 matching lines @@
   CloneMap clones_;
 
   int slow_down_raster_scale_factor_for_debug_;
 
   DISALLOW_COPY_AND_ASSIGN(PicturePileImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_PICTURE_PILE_IMPL_H_