cc: Only consider layer clipped content rect for analysis

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>
 #include <vector>
@@ skipping 39 matching lines @@
 
     bool is_solid_color;
     bool is_transparent;
     bool has_text;
     bool is_cheap_to_raster;
     SkColor solid_color;
 
     skia::AnalysisCanvas::LazyPixelRefList lazy_pixel_refs;
   };
 
-  void AnalyzeInRect(const gfx::Rect& content_rect,
+  void AnalyzeInRect(gfx::Rect content_rect,
                      float contents_scale,
                      Analysis* analysis);
 
  protected:
   friend class PicturePile;
 
   explicit PicturePileImpl(bool enable_lcd_text);
   PicturePileImpl(const PicturePileBase* other, bool enable_lcd_text);
   virtual ~PicturePileImpl();
 
@@ skipping 19 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_