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

webkit/plugins/ppapi/plugin_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 WEBKIT_PLUGINS_PPAPI_PLUGIN_DELEGATE_H_
 #define WEBKIT_PLUGINS_PPAPI_PLUGIN_DELEGATE_H_
 
 #include <string>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
+#include "base/memory/shared_memory.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/platform_file.h"
 #include "base/process.h"
-#include "base/shared_memory.h"
 #include "base/sync_socket.h"
 #include "base/time/time.h"
 #include "ipc/ipc_platform_file.h"
 #include "media/video/capture/video_capture.h"
 #include "media/video/video_decode_accelerator.h"
 #include "ppapi/c/dev/pp_video_dev.h"
 #include "ppapi/c/dev/ppb_device_ref_dev.h"
 #include "ppapi/c/pp_completion_callback.h"
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/c/pp_file_info.h"
@@ skipping 667 matching lines @@
   // The loader object should set itself on the PluginInstance as the document
   // loader using set_document_loader.
   virtual void HandleDocumentLoad(PluginInstance* instance,
                                   const WebKit::WebURLResponse& response) = 0;
 };
 
 }  // namespace ppapi
 }  // namespace webkit
 
 #endif  // WEBKIT_PLUGINS_PPAPI_PLUGIN_DELEGATE_H_