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

chrome/renderer/extensions/dispatcher.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 CHROME_RENDERER_EXTENSIONS_DISPATCHER_H_
 #define CHROME_RENDERER_EXTENSIONS_DISPATCHER_H_
 
 #include <map>
 #include <set>
 #include <string>
 #include <vector>
 
-#include "base/shared_memory.h"
+#include "base/memory/shared_memory.h"
 #include "base/timer/timer.h"
 #include "chrome/common/extensions/extension_set.h"
 #include "chrome/common/extensions/features/feature.h"
 #include "chrome/renderer/extensions/chrome_v8_context.h"
 #include "chrome/renderer/extensions/chrome_v8_context_set.h"
 #include "chrome/renderer/extensions/v8_schema_registry.h"
 #include "chrome/renderer/resource_bundle_source_map.h"
 #include "content/public/renderer/render_process_observer.h"
 #include "extensions/common/event_filter.h"
 #include "v8/include/v8.h"
@@ skipping 270 matching lines @@
   // The platforms system font family and size;
   std::string system_font_family_;
   std::string system_font_size_;
 
   DISALLOW_COPY_AND_ASSIGN(Dispatcher);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_RENDERER_EXTENSIONS_DISPATCHER_H_