cc: Clean up PBRWP::ScheduleTasks a bit.

cc/resources/pixel_buffer_raster_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_RESOURCES_PIXEL_BUFFER_RASTER_WORKER_POOL_H_
 #define CC_RESOURCES_PIXEL_BUFFER_RASTER_WORKER_POOL_H_
 
 #include <deque>
 #include <set>
 #include <vector>
 
+#include "base/containers/hash_tables.h"
 #include "cc/resources/raster_worker_pool.h"
 
 namespace cc {
 
 class CC_EXPORT PixelBufferRasterWorkerPool : public RasterWorkerPool {
  public:
   virtual ~PixelBufferRasterWorkerPool();
 
   static scoped_ptr<RasterWorkerPool> Create(
       ResourceProvider* resource_provider,
@@ skipping 39 matching lines @@
   scoped_ptr<base::Value> ThrottleStateAsValue() const;
 
   bool shutdown_;
 
   TaskMap pixel_buffer_tasks_;
 
   typedef std::deque<scoped_refptr<internal::RasterWorkerPoolTask> > TaskDeque;
   TaskDeque tasks_with_pending_upload_;
   TaskDeque completed_tasks_;
 
-  typedef std::set<internal::RasterWorkerPoolTask*> TaskSet;
+  typedef base::hash_set<internal::RasterWorkerPoolTask*> TaskSet;
   TaskSet tasks_required_for_activation_;
 
   size_t scheduled_raster_task_count_;
   size_t bytes_pending_upload_;
   size_t max_bytes_pending_upload_;
   bool has_performed_uploads_since_last_flush_;
   base::CancelableClosure check_for_completed_raster_tasks_callback_;
   bool check_for_completed_raster_tasks_pending_;
 
   bool should_notify_client_if_no_tasks_are_pending_;
   bool should_notify_client_if_no_tasks_required_for_activation_are_pending_;
 
   DISALLOW_COPY_AND_ASSIGN(PixelBufferRasterWorkerPool);
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_PIXEL_BUFFER_RASTER_WORKER_POOL_H_