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

ppapi/proxy/plugin_array_buffer_var.cc

 // 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.
 
 #include "ppapi/proxy/plugin_array_buffer_var.h"
 
 #include <stdlib.h>
 
 #include <limits>
 
+#include "base/memory/shared_memory.h"
 #include "base/process_util.h"
-#include "base/shared_memory.h"
 #include "ppapi/c/dev/ppb_buffer_dev.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
 #include "ppapi/proxy/plugin_globals.h"
 #include "ppapi/proxy/ppapi_messages.h"
 #include "ppapi/proxy/serialized_structs.h"
 #include "ppapi/shared_impl/host_resource.h"
 #include "ppapi/shared_impl/resource.h"
 #include "ppapi/thunk/enter.h"
 #include "ppapi/thunk/ppb_buffer_api.h"
 
@@ skipping 79 matching lines @@
 
   // We don't need to keep the shared memory around on the plugin side;
   // we've already copied all our data into it. We'll make it invalid
   // just to be safe.
   *plugin_out_handle = base::SharedMemory::NULLHandle();
 
   return true;
 }
 
 }  // namespace ppapi