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..3e10f8bb4c3d7130804c7c0df643bc84020231ca 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 {

[nduca, 2013/12/02 19:50:17]

should this be mutable?

[slavi, 2013/12/04 02:06:50]

Done.

+    return use_gpu_rasterizer_;
+  }
+
   scoped_ptr<base::Value> AsValue() const;
 
   inline bool IsReadyToDraw() const {
@@ -122,7 +126,8 @@ 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);

[nduca, 2013/12/02 19:50:17]

this is unreadable in the call sites. new Tile (..., true, false) means nothing.

please make an enum for TileRasterFlags { USE_GPU_RASTERIZER = 0x2, USE_LCD_TEXT
= 0x1 } and adjust call sites accordingly.

[slavi, 2013/12/04 02:06:50]

Done.

   ~Tile();
 
   ManagedTileState& managed_state() { return managed_state_; }
@@ -140,6 +145,7 @@ 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_;