Move TaskGraph creation to TileManager

cc/raster/gpu_tile_task_worker_pool.h

Index: cc/raster/gpu_tile_task_worker_pool.h
diff --git a/cc/raster/gpu_tile_task_worker_pool.h b/cc/raster/gpu_tile_task_worker_pool.h
index f9ab24c6feafc9d243c4a2c469b906743485a566..20ac14c0af59073714e23ea9765b18af3c0042bf 100644
--- a/cc/raster/gpu_tile_task_worker_pool.h
+++ b/cc/raster/gpu_tile_task_worker_pool.h
@@ -5,7 +5,6 @@
 #ifndef CC_RASTER_GPU_TILE_TASK_WORKER_POOL_H_
 #define CC_RASTER_GPU_TILE_TASK_WORKER_POOL_H_
 
-#include "base/memory/weak_ptr.h"
 #include "cc/raster/tile_task_runner.h"
 #include "cc/raster/tile_task_worker_pool.h"
 
@@ -32,9 +31,8 @@ class CC_EXPORT GpuTileTaskWorkerPool : public TileTaskWorkerPool,
   TileTaskRunner* AsTileTaskRunner() override;
 
   // Overridden from TileTaskRunner:
-  void SetClient(TileTaskRunnerClient* client) override;
   void Shutdown() override;
-  void ScheduleTasks(TileTaskQueue* queue) override;
+  void ScheduleTasks(TaskGraph* graph) override;
   void CheckForCompletedTasks() override;
   ResourceFormat GetResourceFormat(bool must_support_alpha) const override;
   bool GetResourceRequiresSwizzle(bool must_support_alpha) const override;
@@ -54,29 +52,15 @@ class CC_EXPORT GpuTileTaskWorkerPool : public TileTaskWorkerPool,
                         bool use_distance_field_text,
                         int gpu_rasterization_msaa_sample_count);
 
-  void OnTaskSetFinished(TaskSet task_set);
   void CompleteTasks(const Task::Vector& tasks);
 
   scoped_refptr<base::SequencedTaskRunner> task_runner_;
   TaskGraphRunner* task_graph_runner_;
   const NamespaceToken namespace_token_;
-  TileTaskRunnerClient* client_;
   scoped_ptr<GpuRasterizer> rasterizer_;
 
-  TaskSetCollection tasks_pending_;
-
-  scoped_refptr<TileTask> task_set_finished_tasks_[kNumberOfTaskSets];
-
-  // Task graph used when scheduling tasks and vector used to gather
-  // completed tasks.
-  TaskGraph graph_;
   Task::Vector completed_tasks_;
 
-  base::WeakPtrFactory<GpuTileTaskWorkerPool>
-      task_set_finished_weak_ptr_factory_;
-
-  base::WeakPtrFactory<GpuTileTaskWorkerPool> weak_ptr_factory_;
-
   DISALLOW_COPY_AND_ASSIGN(GpuTileTaskWorkerPool);
 };