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

webkit/plugins/ppapi/audio_helper.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 WEBKIT_PLUGINS_PPAPI_AUDIO_HELPER_H_
 #define WEBKIT_PLUGINS_PPAPI_AUDIO_HELPER_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
-#include "base/shared_memory.h"
+#include "base/memory/shared_memory.h"
 #include "base/sync_socket.h"
 #include "ppapi/c/pp_completion_callback.h"
 #include "ppapi/shared_impl/resource.h"
 #include "ppapi/shared_impl/scoped_pp_resource.h"
 #include "ppapi/shared_impl/tracked_callback.h"
 #include "webkit/plugins/ppapi/plugin_delegate.h"
 #include "webkit/plugins/ppapi/ppapi_plugin_instance.h"
 
 namespace webkit {
 namespace ppapi {
@@ skipping 34 matching lines @@
   size_t shared_memory_size_for_create_callback_;
   scoped_ptr<base::SyncSocket> socket_for_create_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioHelper);
 };
 
 }  // namespace ppapi
 }  // namespace webkit
 
 #endif  // WEBKIT_PLUGINS_PPAPI_AUDIO_HELPER_H_