cc: Support anti-aliasing for solid color layers.

cc/tile_draw_quad.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_TILE_DRAW_QUAD_H_
 #define CC_TILE_DRAW_QUAD_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "cc/cc_export.h"
 #include "cc/draw_quad.h"
 #include "third_party/khronos/GLES2/gl2.h"
 #include "ui/gfx/point.h"
 #include "ui/gfx/size.h"
 
 namespace cc {
 
 class CC_EXPORT TileDrawQuad : public DrawQuad {
  public:
   static scoped_ptr<TileDrawQuad> Create();
 
   void SetNew(const SharedQuadState* shared_quad_state,
               gfx::Rect rect,
               gfx::Rect opaque_rect,
+              AntiAliasing anti_aliasing,
               unsigned resource_id,
               const gfx::RectF& tex_coord_rect,
               gfx::Size texture_size,
-              bool swizzle_contents,
-              bool left_edge_aa,
-              bool top_edge_aa,
-              bool right_edge_aa,
-              bool bottom_edge_aa);
+              bool swizzle_contents);
 
   void SetAll(const SharedQuadState* shared_quad_state,
               gfx::Rect rect,
               gfx::Rect opaque_rect,
               gfx::Rect visible_rect,
               bool needs_blending,
+              AntiAliasing anti_aliasing,
               unsigned resource_id,
               const gfx::RectF& tex_coord_rect,
               gfx::Size texture_size,
-              bool swizzle_contents,
-              bool left_edge_aa,
-              bool top_edge_aa,
-              bool right_edge_aa,
-              bool bottom_edge_aa);
+              bool swizzle_contents);
 
   unsigned resource_id;
   gfx::RectF tex_coord_rect;
   gfx::Size texture_size;
   bool swizzle_contents;
 
-  // TODO(danakj): Stick the data used to compute these things in the quad
-  // instead so the parent compositor can decide to use AA on its own.
-  bool left_edge_aa;
-  bool top_edge_aa;
-  bool right_edge_aa;
-  bool bottom_edge_aa;
-
-  bool IsAntialiased() const {
-    return left_edge_aa || top_edge_aa || right_edge_aa || bottom_edge_aa;
-  }
-
   static const TileDrawQuad* MaterialCast(const DrawQuad*);
  private:
   TileDrawQuad();
 };
 
 }
 
 #endif  // CC_TILE_DRAW_QUAD_H_