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

components/visitedlink/renderer/visitedlink_slave.h

 // Copyright (c) 2011 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 COMPONENTS_VISITEDLINK_RENDERER_VISITEDLINK_SLAVE_H_
 #define COMPONENTS_VISITEDLINK_RENDERER_VISITEDLINK_SLAVE_H_
 
 #include "base/compiler_specific.h"
-#include "base/shared_memory.h"
+#include "base/memory/shared_memory.h"
 #include "components/visitedlink/common/visitedlink_common.h"
 #include "content/public/renderer/render_process_observer.h"
 
 namespace visitedlink {
 
 // Reads the link coloring database provided by the master. There can be any
 // number of slaves reading the same database.
 class VisitedLinkSlave : public VisitedLinkCommon,
                          public content::RenderProcessObserver {
  public:
@@ skipping 13 matching lines @@
 
   // shared memory consists of a SharedHeader followed by the table
   base::SharedMemory* shared_memory_;
 
   DISALLOW_COPY_AND_ASSIGN(VisitedLinkSlave);
 };
 
 }  // namespace visitedlink
 
 #endif  // COMPONENTS_VISITEDLINK_RENDERER_VISITEDLINK_SLAVE_H_