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

ppapi/proxy/plugin_array_buffer_var.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_PLUGIN_ARRAY_BUFFER_VAR_H_
 #define PPAPI_PROXY_PLUGIN_ARRAY_BUFFER_VAR_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
-#include "base/shared_memory.h"
+#include "base/memory/shared_memory.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_stdint.h"
 #include "ppapi/shared_impl/var.h"
 
 namespace ppapi {
 
 // Represents a plugin-side ArrayBufferVar. In the plugin process, it's
 // owned as a vector.
 class PluginArrayBufferVar : public ArrayBufferVar {
  public:
@@ skipping 19 matching lines @@
   base::SharedMemoryHandle plugin_handle_;
   scoped_ptr<base::SharedMemory> shmem_;
   uint32 size_in_bytes_;
 
   DISALLOW_COPY_AND_ASSIGN(PluginArrayBufferVar);
 };
 
 }  // namespace ppapi
 
 #endif  // PPAPI_PROXY_PLUGIN_ARRAY_BUFFER_VAR_H_