Move guest_view to extensions.

chrome/browser/renderer_context_menu/render_view_context_menu.cc

 // 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/renderer_context_menu/render_view_context_menu.h"
 
 #include <algorithm>
 #include <set>
 #include <utility>
 
@@ skipping 443 matching lines @@
 
 void RenderViewContextMenu::AppendCurrentExtensionItems() {
   // Avoid appending extension related items when |extension| is null.
   // For Panel, this happens when the panel is navigated to a url outside of the
   // extension's package.
   const Extension* extension = GetExtension();
   if (extension) {
     // Only add extension items from this extension.
     int index = 0;
     const MenuItem::ExtensionKey key(
-        extension->id(), WebViewGuest::GetViewInstanceId(source_web_contents_));
+        extension->id(),
+        extensions::WebViewGuest::GetViewInstanceId(source_web_contents_));
     extension_items_.AppendExtensionItems(
         key, PrintableSelectionText(), &index);
   }
 }
 
 void RenderViewContextMenu::InitMenu() {
   RenderViewContextMenuBase::InitMenu();
 
   if (content_type_->SupportsGroup(ContextMenuContentType::ITEM_GROUP_PAGE))
     AppendPageItems();
@@ skipping 1309 matching lines @@
   source_web_contents_->GetRenderViewHost()->
       ExecuteMediaPlayerActionAtLocation(location, action);
 }
 
 void RenderViewContextMenu::PluginActionAt(
     const gfx::Point& location,
     const WebPluginAction& action) {
   source_web_contents_->GetRenderViewHost()->
       ExecutePluginActionAtLocation(location, action);
 }