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

chrome/browser/tab_contents/menu_context/menu_context_factory.cc

Index: chrome/browser/tab_contents/menu_context/menu_context_factory.cc
diff --git a/chrome/browser/tab_contents/menu_context/menu_context_factory.cc b/chrome/browser/tab_contents/menu_context/menu_context_factory.cc
new file mode 100644
index 0000000000000000000000000000000000000000..8f3bbb8e50ee3e7fbbe66e5899a369d138b50fc4
--- /dev/null
+++ b/chrome/browser/tab_contents/menu_context/menu_context_factory.cc
@@ -0,0 +1,49 @@
+// 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.
+
+#include "chrome/browser/tab_contents/menu_context/menu_context_factory.h"
+
+#include "chrome/browser/app_mode/app_mode_utils.h"
+#include "chrome/browser/guestview/webview/menu_context_guest.h"
+#include "chrome/browser/guestview/webview/webview_guest.h"
+#include "chrome/browser/tab_contents/menu_context/menu_context.h"
+#include "chrome/browser/tab_contents/menu_context/menu_context_app_mode.h"
+#include "chrome/browser/tab_contents/menu_context/menu_context_extension_popup.h"
+#include "chrome/browser/tab_contents/menu_context/menu_context_panel.h"
+#include "chrome/browser/tab_contents/menu_context/menu_context_platform_app.h"
+#include "content/public/browser/render_frame_host.h"
+#include "content/public/browser/web_contents.h"
+#include "extensions/browser/view_type_utils.h"
+#include "extensions/common/extension.h"
+
+MenuContextFactory::MenuContextFactory() {
+}
+
+MenuContextFactory::~MenuContextFactory() {
+}
+
+// static.
+MenuContext* MenuContextFactory::Create(
+    content::WebContents* web_contents,
+    content::RenderFrameHost* render_frame_host,
+    const content::ContextMenuParams& params) {
+  if (WebViewGuest::FromWebContents(web_contents))
+    return new MenuContextGuest(render_frame_host, params);
+
+  if (chrome::IsRunningInForcedAppMode())
+    return new MenuContextAppMode(render_frame_host, params);
+
+  const extensions::ViewType view_type = extensions::GetViewType(web_contents);
+
+  if (view_type == extensions::VIEW_TYPE_APP_WINDOW)
+    return new MenuContextPlatformApp(render_frame_host, params);
+
+  if (view_type == extensions::VIEW_TYPE_EXTENSION_POPUP)
+    return new MenuContextExtensionPopup(render_frame_host, params);
+
+  if (view_type == extensions::VIEW_TYPE_PANEL)
+    return new MenuContextPanel(render_frame_host, params);
+
+  return new MenuContext(render_frame_host, params);
+}