Align base::hash_map with C++11.

cc/resources/prioritized_resource_manager.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_PRIORITIZED_RESOURCE_MANAGER_H_
 #define CC_RESOURCES_PRIORITIZED_RESOURCE_MANAGER_H_
 
 #include <list>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/containers/hash_tables.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/synchronization/lock.h"
 #include "cc/base/cc_export.h"
 #include "cc/resources/prioritized_resource.h"
 #include "cc/resources/priority_calculator.h"
 #include "cc/resources/resource.h"
 #include "cc/trees/proxy.h"
 #include "ui/gfx/size.h"
 
-#if defined(COMPILER_GCC)
-namespace BASE_HASH_NAMESPACE {
-template <> struct hash<cc::PrioritizedResource*> {
-  size_t operator()(cc::PrioritizedResource* ptr) const {
-    return hash<size_t>()(reinterpret_cast<size_t>(ptr));
-  }
-};
-}  // namespace BASE_HASH_NAMESPACE
-#endif  // COMPILER
-
 namespace cc {
 
 class PriorityCalculator;
 class Proxy;
 
 class CC_EXPORT PrioritizedResourceManager {
  public:
   static scoped_ptr<PrioritizedResourceManager> Create(const Proxy* proxy) {
     return make_scoped_ptr(new PrioritizedResourceManager(proxy));
   }
@@ skipping 196 matching lines @@
   // Statistics copied at the time of PushTexturePrioritiesToBackings.
   size_t memory_visible_last_pushed_bytes_;
   size_t memory_visible_and_nearby_last_pushed_bytes_;
 
   DISALLOW_COPY_AND_ASSIGN(PrioritizedResourceManager);
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_PRIORITIZED_RESOURCE_MANAGER_H_