cc: Refactor TileTaskWorkerPool.

cc/raster/one_copy_raster_buffer_provider.h

Index: cc/raster/one_copy_raster_buffer_provider.h
diff --git a/cc/raster/one_copy_tile_task_worker_pool.h b/cc/raster/one_copy_raster_buffer_provider.h
similarity index 67%
rename from cc/raster/one_copy_tile_task_worker_pool.h
rename to cc/raster/one_copy_raster_buffer_provider.h
index da41020eb2a8269a88ffc64aca348318ba778412..35967ffd9a878037e1b5194b178269fd2d49b6aa 100644
--- a/cc/raster/one_copy_tile_task_worker_pool.h
+++ b/cc/raster/one_copy_raster_buffer_provider.h
@@ -2,14 +2,14 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CC_RASTER_ONE_COPY_TILE_TASK_WORKER_POOL_H_
-#define CC_RASTER_ONE_COPY_TILE_TASK_WORKER_POOL_H_
+#ifndef CC_RASTER_ONE_COPY_RASTER_BUFFER_PROVIDER_H_
+#define CC_RASTER_ONE_COPY_RASTER_BUFFER_PROVIDER_H_
 
 #include <stdint.h>
 
 #include "base/macros.h"
 #include "cc/output/context_provider.h"
-#include "cc/raster/tile_task_worker_pool.h"
+#include "cc/raster/raster_buffer_provider.h"
 #include "cc/resources/resource_provider.h"
 
 namespace cc {
@@ -17,14 +17,12 @@ struct StagingBuffer;
 class StagingBufferPool;
 class ResourcePool;
 
-class CC_EXPORT OneCopyTileTaskWorkerPool : public TileTaskWorkerPool,
-                                            public RasterBufferProvider {
+class CC_EXPORT OneCopyRasterBufferProvider : public RasterBufferProvider {
  public:
-  ~OneCopyTileTaskWorkerPool() override;
+  ~OneCopyRasterBufferProvider() override;
 
-  static std::unique_ptr<TileTaskWorkerPool> Create(
+  static std::unique_ptr<RasterBufferProvider> Create(
       base::SequencedTaskRunner* task_runner,
-      TaskGraphRunner* task_graph_runner,
       ContextProvider* context_provider,
       ResourceProvider* resource_provider,
       int max_copy_texture_chromium_size,
@@ -32,20 +30,15 @@ class CC_EXPORT OneCopyTileTaskWorkerPool : public TileTaskWorkerPool,
       int max_staging_buffer_usage_in_bytes,
       ResourceFormat preferred_tile_format);
 
-  // Overridden from TileTaskWorkerPool:
-  void Shutdown() 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;
-  RasterBufferProvider* AsRasterBufferProvider() override;
-
   // Overridden from RasterBufferProvider:
   std::unique_ptr<RasterBuffer> AcquireBufferForRaster(
       const Resource* resource,
       uint64_t resource_content_id,
       uint64_t previous_content_id) override;
   void ReleaseBufferForRaster(std::unique_ptr<RasterBuffer> buffer) override;
+  void BarrierToSyncResources() override;
+  ResourceFormat GetResourceFormat(bool must_support_alpha) const override;
+  bool GetResourceRequiresSwizzle(bool must_support_alpha) const override;
 
   // Playback raster source and copy result into |resource|.
   void PlaybackAndCopyOnWorkerThread(
@@ -60,13 +53,12 @@ class CC_EXPORT OneCopyTileTaskWorkerPool : public TileTaskWorkerPool,
       uint64_t new_content_id);
 
  protected:
-  OneCopyTileTaskWorkerPool(base::SequencedTaskRunner* task_runner,
-                            TaskGraphRunner* task_graph_runner,
-                            ResourceProvider* resource_provider,
-                            int max_copy_texture_chromium_size,
-                            bool use_partial_raster,
-                            int max_staging_buffer_usage_in_bytes,
-                            ResourceFormat preferred_tile_format);
+  OneCopyRasterBufferProvider(base::SequencedTaskRunner* task_runner,
+                              ResourceProvider* resource_provider,
+                              int max_copy_texture_chromium_size,
+                              bool use_partial_raster,
+                              int max_staging_buffer_usage_in_bytes,
+                              ResourceFormat preferred_tile_format);
 
  private:
   void PlaybackToStagingBuffer(
@@ -86,8 +78,6 @@ class CC_EXPORT OneCopyTileTaskWorkerPool : public TileTaskWorkerPool,
                           uint64_t previous_content_id,
                           uint64_t new_content_id);
 
-  TaskGraphRunner* task_graph_runner_;
-  const NamespaceToken namespace_token_;
   ResourceProvider* const resource_provider_;
   const int max_bytes_per_copy_operation_;
   bool use_partial_raster_;
@@ -98,11 +88,9 @@ class CC_EXPORT OneCopyTileTaskWorkerPool : public TileTaskWorkerPool,
   ResourceFormat preferred_tile_format_;
   std::unique_ptr<StagingBufferPool> staging_pool_;
 
-  Task::Vector completed_tasks_;
-
-  DISALLOW_COPY_AND_ASSIGN(OneCopyTileTaskWorkerPool);
+  DISALLOW_COPY_AND_ASSIGN(OneCopyRasterBufferProvider);
 };
 
 }  // namespace cc
 
-#endif  // CC_RASTER_ONE_COPY_TILE_TASK_WORKER_POOL_H_
+#endif  // CC_RASTER_ONE_COPY_RASTER_BUFFER_PROVIDER_H_