Reland Allow one-copy and zero-copy task tile worker pools to use compressed textures.

cc/raster/zero_copy_tile_task_worker_pool.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CC_RASTER_ZERO_COPY_TILE_TASK_WORKER_POOL_H_
 #define CC_RASTER_ZERO_COPY_TILE_TASK_WORKER_POOL_H_
 
 #include <stdint.h>
 
 #include "base/macros.h"
@@ skipping 14 matching lines @@
 class CC_EXPORT ZeroCopyTileTaskWorkerPool : public TileTaskWorkerPool,
                                              public TileTaskRunner,
                                              public TileTaskClient {
  public:
   ~ZeroCopyTileTaskWorkerPool() override;
 
   static scoped_ptr<TileTaskWorkerPool> Create(
       base::SequencedTaskRunner* task_runner,
       TaskGraphRunner* task_graph_runner,
       ResourceProvider* resource_provider,
-      bool use_rgba_4444_texture_format);
+      ResourceFormat preferred_tile_format);
 
   // Overridden from TileTaskWorkerPool:
   TileTaskRunner* AsTileTaskRunner() override;
 
   // Overridden from TileTaskRunner:
   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;
 
   // Overridden from TileTaskClient:
   scoped_ptr<RasterBuffer> AcquireBufferForRaster(
       const Resource* resource,
       uint64_t resource_content_id,
       uint64_t previous_content_id) override;
   void ReleaseBufferForRaster(scoped_ptr<RasterBuffer> buffer) override;
 
  protected:
   ZeroCopyTileTaskWorkerPool(base::SequencedTaskRunner* task_runner,
                              TaskGraphRunner* task_graph_runner,
                              ResourceProvider* resource_provider,
-                             bool use_rgba_4444_texture_format);
+                             ResourceFormat preferred_tile_format);
 
  private:
   scoped_refptr<base::trace_event::ConvertableToTraceFormat> StateAsValue()
       const;
 
   scoped_refptr<base::SequencedTaskRunner> task_runner_;
   TaskGraphRunner* task_graph_runner_;
   const NamespaceToken namespace_token_;
   ResourceProvider* resource_provider_;
 
-  bool use_rgba_4444_texture_format_;
+  ResourceFormat preferred_tile_format_;
 
   Task::Vector completed_tasks_;
 
   DISALLOW_COPY_AND_ASSIGN(ZeroCopyTileTaskWorkerPool);
 };
 
 }  // namespace cc
 
 #endif  // CC_RASTER_ZERO_COPY_TILE_TASK_WORKER_POOL_H_