Use a direct include of the shared_memory header in media/, ppapi/, webkit/.

ppapi/proxy/ppb_audio_proxy.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 PPAPI_PROXY_PPB_AUDIO_PROXY_H_
 #define PPAPI_PROXY_PPB_AUDIO_PROXY_H_
 
 #include <utility>
 
 #include "base/basictypes.h"
-#include "base/shared_memory.h"
+#include "base/memory/shared_memory.h"
 #include "base/sync_socket.h"
 #include "ipc/ipc_platform_file.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/c/ppb_audio.h"
 #include "ppapi/c/ppb_audio_config.h"
 #include "ppapi/proxy/interface_proxy.h"
 #include "ppapi/proxy/proxy_completion_callback_factory.h"
 #include "ppapi/utility/completion_callback_factory.h"
 
@@ skipping 56 matching lines @@
 
   ProxyCompletionCallbackFactory<PPB_Audio_Proxy> callback_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PPB_Audio_Proxy);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PROXY_PPB_AUDIO_PROXY_H_