Use a direct include of the shared_memory header in base/, chrome/, components/.

chrome/common/print_messages.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.
 
 // IPC messages for printing.
 // Multiply-included message file, hence no include guard.
 
 #include <string>
 #include <vector>
 
+#include "base/memory/shared_memory.h"
 #include "base/values.h"
-#include "base/shared_memory.h"
 #include "ipc/ipc_message_macros.h"
 #include "printing/page_size_margins.h"
 #include "printing/print_job_constants.h"
 #include "third_party/WebKit/public/web/WebPrintScalingOption.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/rect.h"
 
 #ifndef CHROME_COMMON_PRINT_MESSAGES_H_
 #define CHROME_COMMON_PRINT_MESSAGES_H_
 
@@ skipping 411 matching lines @@
                     int /* document cookie */)
 
 // Run a nested message loop in the renderer until print preview for
 // window.print() finishes.
 IPC_SYNC_MESSAGE_ROUTED1_0(PrintHostMsg_ScriptedPrintPreview,
                            bool /* is_modifiable */)
 
 // Notify the browser that the PDF in the initiator renderer has disabled print
 // scaling option.
 IPC_MESSAGE_ROUTED0(PrintHostMsg_PrintPreviewScalingDisabled)