Added preliminary support for tile rasterization with Ganesh

cc/resources/tile_manager.h

Index: cc/resources/tile_manager.h
diff --git a/cc/resources/tile_manager.h b/cc/resources/tile_manager.h
index 98a66f854ca44adfd654e846cc6194f88c2e614b..3a9431d2971ba1fb18e43fbd9d3d0fa93b706611 100644
--- a/cc/resources/tile_manager.h
+++ b/cc/resources/tile_manager.h
@@ -14,6 +14,7 @@
 #include "base/values.h"
 #include "cc/base/ref_counted_managed.h"
 #include "cc/debug/rendering_stats_instrumentation.h"
+#include "cc/resources/gpu_rasterizer.h"
 #include "cc/resources/managed_tile_state.h"
 #include "cc/resources/memory_history.h"
 #include "cc/resources/picture_pile_impl.h"
@@ -48,12 +49,14 @@ scoped_ptr<base::Value> RasterTaskCompletionStatsAsValue(
 // by layers; they automatically register with the manager when they are
 // created, and unregister from the manager when they are deleted.
 class CC_EXPORT TileManager : public RasterWorkerPoolClient,
+                              public GpuRasterizerClient,
                               public RefCountedManager<Tile>,
                               public RefCountedManager<TileBundle> {
  public:
   static scoped_ptr<TileManager> Create(
       TileManagerClient* client,
       ResourceProvider* resource_provider,
+      ContextProvider* context_provider,
       size_t num_raster_threads,
       RenderingStatsInstrumentation* rendering_stats_instrumentation,
       bool use_map_image,
@@ -123,9 +126,14 @@ class CC_EXPORT TileManager : public RasterWorkerPoolClient,
     }
   }
 
+  // GpuRasterizerClient interface
+  virtual void OnGpuRasterTaskCompleted(
+      Tile* tile, scoped_ptr<ScopedResource> resource) OVERRIDE;
+
  protected:
   TileManager(TileManagerClient* client,
               ResourceProvider* resource_provider,
+              scoped_ptr<GpuRasterizer> gpu_rasterizer,
               scoped_ptr<RasterWorkerPool> raster_worker_pool,
               size_t num_raster_threads,
               size_t max_raster_usage_bytes,
@@ -164,6 +172,8 @@ class CC_EXPORT TileManager : public RasterWorkerPoolClient,
       TileVector* tiles_that_need_to_be_rasterized);
   void GetTilesWithAssignedBins(PrioritizedTileSet* tiles);
 
+  GpuRasterizer* GetGpuRasterizerForTest() { return gpu_rasterizer_.get(); }
+
  private:
   void OnImageDecodeTaskCompleted(
       int layer_id,
@@ -192,6 +202,7 @@ class CC_EXPORT TileManager : public RasterWorkerPoolClient,
 
   TileManagerClient* client_;
   scoped_ptr<ResourcePool> resource_pool_;
+  scoped_ptr<GpuRasterizer> gpu_rasterizer_;
   scoped_ptr<RasterWorkerPool> raster_worker_pool_;
   GlobalStateThatImpactsTilePriority global_state_;