cc: Remove redundant BufferIdAllocator

cc/resources/resource_provider.h

 // Copyright 2012 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_RESOURCE_PROVIDER_H_
 #define CC_RESOURCES_RESOURCE_PROVIDER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 34 matching lines @@
 
 namespace gpu {
 class GpuMemoryBufferManager;
 namespace gles {
 class GLES2Interface;
 }
 }
 
 namespace cc {
 class BlockingTaskRunner;
-class IdAllocator;
 class SharedBitmap;
 class SharedBitmapManager;
+class TextureIdAllocator;
 
 // This class is not thread-safe and can only be called from the thread it was
 // created on (in practice, the impl thread).
 class CC_EXPORT ResourceProvider
     : public base::trace_event::MemoryDumpProvider {
  private:
   struct Resource;
 
  public:
   using ResourceIdArray = std::vector<ResourceId>;
@@ skipping 682 matching lines @@
   ContextProvider* compositor_context_provider_;
   SharedBitmapManager* shared_bitmap_manager_;
   gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager_;
   BlockingTaskRunner* blocking_main_thread_task_runner_;
   bool lost_context_provider_;
   ResourceId next_id_;
   ResourceMap resources_;
   int next_child_;
   ChildMap children_;
   scoped_refptr<Fence> current_read_lock_fence_;
-  std::unique_ptr<IdAllocator> texture_id_allocator_;
-  std::unique_ptr<IdAllocator> buffer_id_allocator_;
+  std::unique_ptr<TextureIdAllocator> texture_id_allocator_;
   BufferToTextureTargetMap buffer_to_texture_target_map_;
 
   base::ThreadChecker thread_checker_;
 
   // A process-unique ID used for disambiguating memory dumps from different
   // resource providers.
   int tracing_id_;
 
 #if defined(OS_ANDROID)
   // Set of resource Ids that would like to be notified about promotion hints.
   ResourceIdSet wants_promotion_hints_set_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(ResourceProvider);
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_RESOURCE_PROVIDER_H_