cc: Cleanup class/struct forward declarations

cc/raster/one_copy_raster_buffer_provider.h

 // Copyright 2014 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_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/raster_buffer_provider.h"
 #include "cc/raster/staging_buffer_pool.h"
 #include "cc/resources/resource_provider.h"
 #include "gpu/command_buffer/common/sync_token.h"
 
 namespace cc {
 struct StagingBuffer;
 class StagingBufferPool;
-class ResourcePool;
 
 class CC_EXPORT OneCopyRasterBufferProvider : public RasterBufferProvider {
  public:
   OneCopyRasterBufferProvider(base::SequencedTaskRunner* task_runner,
                               ContextProvider* compositor_context_provider,
                               ContextProvider* worker_context_provider,
                               ResourceProvider* resource_provider,
                               int max_copy_texture_chromium_size,
                               bool use_partial_raster,
                               int max_staging_buffer_usage_in_bytes,
@@ skipping 94 matching lines @@
   const bool async_worker_context_enabled_;
 
   std::set<RasterBufferImpl*> pending_raster_buffers_;
 
   DISALLOW_COPY_AND_ASSIGN(OneCopyRasterBufferProvider);
 };
 
 }  // namespace cc
 
 #endif  // CC_RASTER_ONE_COPY_RASTER_BUFFER_PROVIDER_H_