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

chrome/browser/renderer_context_menu/context_menu_content_type_app_mode.h

Index: chrome/browser/renderer_context_menu/context_menu_content_type_app_mode.h
diff --git a/chrome/browser/renderer_context_menu/context_menu_content_type_app_mode.h b/chrome/browser/renderer_context_menu/context_menu_content_type_app_mode.h
new file mode 100644
index 0000000000000000000000000000000000000000..4c698859bd29b53d37fc8cff906f1c7c22ae41b1
--- /dev/null
+++ b/chrome/browser/renderer_context_menu/context_menu_content_type_app_mode.h
@@ -0,0 +1,27 @@
+// 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_RENDERER_CONTEXT_MENU_CONTEXT_MENU_CONTENT_TYPE_APP_MODE_H_
+#define CHROME_BROWSER_RENDERER_CONTEXT_MENU_CONTEXT_MENU_CONTENT_TYPE_APP_MODE_H_
+
+#include "chrome/browser/renderer_context_menu/context_menu_content_type.h"
+
+class ContextMenuContentTypeAppMode : public ContextMenuContentType {
+ public:
+  virtual ~ContextMenuContentTypeAppMode();
+
+  // ContextMenuContentType overrides.
+  virtual bool SupportsGroup(int group) OVERRIDE;
+
+ protected:
+  ContextMenuContentTypeAppMode(content::RenderFrameHost* render_frame_host,
+                                const content::ContextMenuParams& params);
+
+ private:
+  friend class ContextMenuContentTypeFactory;
+
+  DISALLOW_COPY_AND_ASSIGN(ContextMenuContentTypeAppMode);
+};
+
+#endif  // CHROME_BROWSER_RENDERER_CONTEXT_MENU_CONTEXT_MENU_CONTENT_TYPE_APP_MODE_H_