cc: correctly fix edge-AA for filtered render surfaces.

cc/output/filter_operation.h

 // Copyright 2013 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_OUTPUT_FILTER_OPERATION_H_
 #define CC_OUTPUT_FILTER_OPERATION_H_
 
 #include <memory>
 
 #include "base/logging.h"
@@ skipping 213 matching lines @@
   // or if |from| and |to| are non-null but of different types, returns a
   // no-op filter.
   static FilterOperation Blend(const FilterOperation* from,
                                const FilterOperation* to,
                                double progress);
 
   void AsValueInto(base::trace_event::TracedValue* value) const;
 
   // Maps "forward" to determine which pixels in a destination rect are affected
   // by pixels in the source rect.
-  gfx::Rect MapRect(const gfx::Rect& rect) const;
+  gfx::Rect MapRect(const gfx::Rect& rect, const SkMatrix& matrix) const;
 
  private:
   FilterOperation(FilterType type, float amount);
 
   FilterOperation(FilterType type,
                   const gfx::Point& offset,
                   float stdDeviation,
                   SkColor color);
 
   FilterOperation(FilterType, SkScalar matrix[20]);
@@ skipping 14 matching lines @@
   SkColor drop_shadow_color_;
   sk_sp<SkImageFilter> image_filter_;
   SkScalar matrix_[20];
   int zoom_inset_;
   SkRegion region_;
 };
 
 }  // namespace cc
 
 #endif  // CC_OUTPUT_FILTER_OPERATION_H_