Separate out logic to handle different category/group of context menu items from RVContextMenu class

chrome/browser/tab_contents/menu_context/menu_context_factory.h

Index: chrome/browser/tab_contents/menu_context/menu_context_factory.h
diff --git a/chrome/browser/tab_contents/menu_context/menu_context_factory.h b/chrome/browser/tab_contents/menu_context/menu_context_factory.h
new file mode 100644
index 0000000000000000000000000000000000000000..8e433d7b637cdb83e304f520f11eb98d834df1c3
--- /dev/null
+++ b/chrome/browser/tab_contents/menu_context/menu_context_factory.h
@@ -0,0 +1,30 @@
+// Copyright 2014 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_BROWSER_TAB_CONTENTS_MENU_CONTEXT_MENU_CONTEXT_FACTORY_H_
+#define CHROME_BROWSER_TAB_CONTENTS_MENU_CONTEXT_MENU_CONTEXT_FACTORY_H_
+
+#include "content/public/common/context_menu_params.h"
+
+class MenuContext;
+
+namespace content {
+class RenderFrameHost;
+class WebContents;
+}
+
+class MenuContextFactory {
+ public:
+  static MenuContext* Create(content::WebContents* web_contents,
+                             content::RenderFrameHost* render_frame_host,
+                             const content::ContextMenuParams& params);
+
+ private:
+  MenuContextFactory();
+  virtual ~MenuContextFactory();
+
+  DISALLOW_COPY_AND_ASSIGN(MenuContextFactory);
+};
+
+#endif  // CHROME_BROWSER_TAB_CONTENTS_MENU_CONTEXT_MENU_CONTEXT_FACTORY_H_