cc: GPU rasterize tiles synchronously in PrepareToDraw

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 e94fb7caf1040ddd05cbb83b593fdae85c069ba3..c830e41d989a90aa76f5860cb7ec6f9c4b922ba0 100644
--- a/cc/resources/tile_manager.h
+++ b/cc/resources/tile_manager.h
@@ -18,6 +18,7 @@
 #include "cc/base/unique_notifier.h"
 #include "cc/debug/rendering_stats_instrumentation.h"
 #include "cc/resources/eviction_tile_priority_queue.h"
+#include "cc/resources/gpu_rasterizer.h"
 #include "cc/resources/managed_tile_state.h"
 #include "cc/resources/memory_history.h"
 #include "cc/resources/raster_source.h"
@@ -102,10 +103,12 @@ class CC_EXPORT TileManager : public RasterizerClient,
       base::SequencedTaskRunner* task_runner,
       ResourcePool* resource_pool,
       Rasterizer* rasterizer,
+      GpuRasterizer* gpu_rasterizer,
       RenderingStatsInstrumentation* rendering_stats_instrumentation,
       size_t scheduled_raster_task_limit);
   ~TileManager() override;
 
+  void RasterizeTiles(const GlobalStateThatImpactsTilePriority& state);
   void ManageTiles(const GlobalStateThatImpactsTilePriority& state);
 
   void UpdateVisibleTiles();
@@ -162,11 +165,16 @@ class CC_EXPORT TileManager : public RasterizerClient,
     return tiles;
   }
 
+  void CompleteRasterTask(Tile::Id tile,
+                          scoped_ptr<ScopedResource> resource,
+                          const RasterSource::SolidColorAnalysis& analysis);
+
  protected:
   TileManager(TileManagerClient* client,
               const scoped_refptr<base::SequencedTaskRunner>& task_runner,
               ResourcePool* resource_pool,
               Rasterizer* rasterizer,
+              GpuRasterizer* gpu_rasterizer,
               RenderingStatsInstrumentation* rendering_stats_instrumentation,
               size_t scheduled_raster_task_limit);
 
@@ -188,7 +196,8 @@ class CC_EXPORT TileManager : public RasterizerClient,
   virtual void ScheduleTasks(
       const TileVector& tiles_that_need_to_be_rasterized);
 
-  void AssignGpuMemoryToTiles(TileVector* tiles_that_need_to_be_rasterized);
+  void AssignGpuMemoryToTiles(TileVector* tiles_that_need_to_be_rasterized,
+                              size_t scheduled_raser_task_limit);
 
  private:
   class MemoryUsage {
@@ -242,6 +251,7 @@ class CC_EXPORT TileManager : public RasterizerClient,
   scoped_refptr<base::SequencedTaskRunner> task_runner_;
   ResourcePool* resource_pool_;
   Rasterizer* rasterizer_;
+  GpuRasterizer* gpu_rasterizer_;
   GlobalStateThatImpactsTilePriority global_state_;
   const size_t scheduled_raster_task_limit_;