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..dd1a0009105bae7942af8219608fc3e02cc29ea3 100644
--- a/cc/resources/tile_manager.h
+++ b/cc/resources/tile_manager.h
@@ -106,6 +106,7 @@ class CC_EXPORT TileManager : public RasterizerClient,
       size_t scheduled_raster_task_limit);
   ~TileManager() override;
 
+  void RasterizeTiles(const GlobalStateThatImpactsTilePriority& state);
   void ManageTiles(const GlobalStateThatImpactsTilePriority& state);
 
   void UpdateVisibleTiles();
@@ -188,7 +189,8 @@ 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 {