Align base::hash_map with C++11, part 1.

chrome/browser/download/chrome_download_manager_delegate.h

 // Copyright (c) 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 CHROME_BROWSER_DOWNLOAD_CHROME_DOWNLOAD_MANAGER_DELEGATE_H_
 #define CHROME_BROWSER_DOWNLOAD_CHROME_DOWNLOAD_MANAGER_DELEGATE_H_
 
 #include "base/compiler_specific.h"
 #include "base/containers/hash_tables.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 16 matching lines @@
 }
 
 namespace extensions {
 class CrxInstaller;
 }
 
 namespace user_prefs {
 class PrefRegistrySyncable;
 }
 
-#if defined(COMPILER_GCC) && defined(ENABLE_EXTENSIONS)
-namespace BASE_HASH_NAMESPACE {
-template<>
-struct hash<extensions::CrxInstaller*> {
-  std::size_t operator()(extensions::CrxInstaller* const& p) const {
-    return reinterpret_cast<std::size_t>(p);
-  }
-};
-}  // namespace BASE_HASH_NAMESPACE
-#endif
-
 // This is the Chrome side helper for the download system.
 class ChromeDownloadManagerDelegate
     : public content::DownloadManagerDelegate,
       public content::NotificationObserver,
       public DownloadTargetDeterminerDelegate {
  public:
   explicit ChromeDownloadManagerDelegate(Profile* profile);
   virtual ~ChromeDownloadManagerDelegate();
 
   // Should be called before the first call to ShouldCompleteDownload() to
@@ skipping 128 matching lines @@
 #endif
 
   content::NotificationRegistrar registrar_;
 
   base::WeakPtrFactory<ChromeDownloadManagerDelegate> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeDownloadManagerDelegate);
 };
 
 #endif  // CHROME_BROWSER_DOWNLOAD_CHROME_DOWNLOAD_MANAGER_DELEGATE_H_