Added preliminary support for tile rasterization with Ganesh

cc/resources/tile.h

Index: cc/resources/tile.h
diff --git a/cc/resources/tile.h b/cc/resources/tile.h
index 440c6b031984bf4c2c7816c71cf1e4db223a7bc3..407b7e40b86fb8c81ff37a3fea5548e319a5eb7d 100644
--- a/cc/resources/tile.h
+++ b/cc/resources/tile.h
@@ -60,6 +60,10 @@ class CC_EXPORT Tile : public RefCountedManaged<Tile> {
     return can_use_lcd_text_;
   }
 
+  bool use_gpu_rasterizer() const {
+    return use_gpu_rasterizer_;
+  }
+
   scoped_ptr<base::Value> AsValue() const;
 
   inline bool IsReadyToDraw() const {
@@ -112,6 +116,7 @@ class CC_EXPORT Tile : public RefCountedManaged<Tile> {
   friend class FakeTileManager;
   friend class BinComparator;
   friend class FakePictureLayerImpl;
+  friend class GpuRasterizer;
 
   // Methods called by by tile manager.
   Tile(TileManager* tile_manager,
@@ -122,7 +127,8 @@ class CC_EXPORT Tile : public RefCountedManaged<Tile> {
        float contents_scale,
        int layer_id,
        int source_frame_number,
-       bool can_use_lcd_text);
+       bool can_use_lcd_text,
+       bool use_gpu_rasterizer);
   ~Tile();
 
   ManagedTileState& managed_state() { return managed_state_; }
@@ -140,6 +146,7 @@ class CC_EXPORT Tile : public RefCountedManaged<Tile> {
   int layer_id_;
   int source_frame_number_;
   bool can_use_lcd_text_;
+  bool use_gpu_rasterizer_;
 
   Id id_;
   static Id s_next_id_;