Align base::hash_map with C++11.

content/browser/manifest/manifest_manager_host.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 CONTENT_RENDERER_MANIFEST_MANIFEST_MANAGER_HOST_H_
 #define CONTENT_RENDERER_MANIFEST_MANIFEST_MANAGER_HOST_H_
 
 #include "base/callback_forward.h"
 #include "base/id_map.h"
 #include "content/public/browser/web_contents_observer.h"
 
-#if defined(COMPILER_GCC)
-namespace BASE_HASH_NAMESPACE {
-template<>
-struct hash<content::RenderFrameHost*> {
-  uint64 operator()(content::RenderFrameHost* ptr) const {
-    return hash<uint64>()(reinterpret_cast<uint64>(ptr));
-  }
-};
-}
-#endif
-
 namespace content {
 
 class RenderFrameHost;
 class WebContents;
 struct Manifest;
 
 // ManifestManagerHost is a helper class that allows callers to get the Manifest
 // associated with a frame. It handles the IPC messaging with the child process.
 // TODO(mlamouri): keep a cached version and a dirty bit here.
 class ManifestManagerHost : public WebContentsObserver {
@@ skipping 24 matching lines @@
   CallbackMap* GetCallbackMapForFrame(RenderFrameHost*);
 
   FrameCallbackMap pending_callbacks_;
 
   DISALLOW_COPY_AND_ASSIGN(ManifestManagerHost);
 };
 
 } // namespace content
 
 #endif // CONTENT_RENDERER_MANIFEST_MANIFEST_MANAGER_HOST_H_