Replace more ObserverList with base::ObserverList.

gpu/command_buffer/service/valuebuffer_manager.h

 // Copyright (c) 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 GPU_COMMAND_BUFFER_SERVICE_VALUEBUFFER_MANAGER_H_
 #define GPU_COMMAND_BUFFER_SERVICE_VALUEBUFFER_MANAGER_H_
 
 #include "base/basictypes.h"
 #include "base/containers/hash_tables.h"
 #include "base/memory/ref_counted.h"
@@ skipping 34 matching lines @@
   friend class base::RefCounted<SubscriptionRefSet>;
   friend class ValuebufferManager;
 
   typedef base::hash_map<unsigned int, int> RefSet;
 
   void AddSubscription(unsigned int target);
   void RemoveSubscription(unsigned int target);
 
   RefSet reference_set_;
 
-  ObserverList<Observer, true> observers_;
+  base::ObserverList<Observer, true> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(SubscriptionRefSet);
 };
 
 class GPU_EXPORT Valuebuffer : public base::RefCounted<Valuebuffer> {
  public:
   Valuebuffer(ValuebufferManager* manager, unsigned int client_id);
 
   unsigned int client_id() const { return client_id_; }
 
@@ skipping 88 matching lines @@
   // many value buffers are currently subscribed to each
   scoped_refptr<SubscriptionRefSet> subscription_ref_set_;
 
   DISALLOW_COPY_AND_ASSIGN(ValuebufferManager);
 };
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_VALUEBUFFER_MANAGER_H_