Moved ExtensionMessage* into extensions namespace

chrome/browser/extensions/message_handler.h

Index: chrome/browser/extensions/message_handler.h
diff --git a/chrome/browser/extensions/extension_message_handler.h b/chrome/browser/extensions/message_handler.h
similarity index 73%
rename from chrome/browser/extensions/extension_message_handler.h
rename to chrome/browser/extensions/message_handler.h
index 48cdbe902c0e2b771f13d46df608263fe14ec846..140105d22f6e3d6b893a8ebe0f9fd26bdcb72c69 100644
--- a/chrome/browser/extensions/extension_message_handler.h
+++ b/chrome/browser/extensions/message_handler.h
@@ -2,13 +2,15 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CHROME_BROWSER_EXTENSIONS_EXTENSION_MESSAGE_HANDLER_H_
-#define CHROME_BROWSER_EXTENSIONS_EXTENSION_MESSAGE_HANDLER_H_
+#ifndef CHROME_BROWSER_EXTENSIONS_MESSAGE_HANDLER_H_
+#define CHROME_BROWSER_EXTENSIONS_MESSAGE_HANDLER_H_
 
 #include <string>
 
 #include "content/public/browser/render_view_host_observer.h"
 
+namespace extensions {
+
 // Filters and dispatches extension-related IPC messages that arrive from
 // renderers. There is one of these objects for each RenderViewHost in Chrome.
 // Contrast this with extensions::TabHelper, which is only created for
@@ -19,11 +21,11 @@
 // could eliminate this class. Right now, we don't end up with an EFD for tab
 // contents unless that tab contents is hosting chrome-extension:// URLs. That
 // still leaves content scripts. See also: crbug.com/80307.
-class ExtensionMessageHandler : public content::RenderViewHostObserver {
+class MessageHandler : public content::RenderViewHostObserver {
  public:
   // |sender| is guaranteed to outlive this object.
-  explicit ExtensionMessageHandler(content::RenderViewHost* render_view_host);
-  virtual ~ExtensionMessageHandler();
+  explicit MessageHandler(content::RenderViewHost* render_view_host);
+  virtual ~MessageHandler();
 
   // RenderViewHostObserver overrides.
   virtual void RenderViewHostInitialized() OVERRIDE;
@@ -33,7 +35,9 @@ class ExtensionMessageHandler : public content::RenderViewHostObserver {
   // Message handlers.
   void OnPostMessage(int port_id, const std::string& message);
 
-  DISALLOW_COPY_AND_ASSIGN(ExtensionMessageHandler);
+  DISALLOW_COPY_AND_ASSIGN(MessageHandler);
 };
 
-#endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_MESSAGE_HANDLER_H_
+}  // namespace extensions
+
+#endif  // CHROME_BROWSER_EXTENSIONS_MESSAGE_HANDLER_H_