Extract minimal RenderViewHost interface for embedders, leaving

content/browser/tab_contents/popup_menu_helper_mac.mm

 // Copyright (c) 2012 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.
 
 #import <Carbon/Carbon.h>
 
 #include "content/browser/tab_contents/popup_menu_helper_mac.h"
 
 #import "base/mac/scoped_sending_event.h"
 #include "base/memory/scoped_nsobject.h"
 #include "base/message_loop.h"
 #include "content/browser/renderer_host/render_view_host.h"
 #include "content/browser/renderer_host/render_widget_host_view_mac.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/notification_types.h"
 #import "ui/base/cocoa/base_view.h"
 #include "webkit/glue/webmenurunner_mac.h"
 
 PopupMenuHelper::PopupMenuHelper(RenderViewHost* render_view_host)
-    : render_view_host_(render_view_host) {
+    : render_view_host_(static_cast<RenderViewHostImpl*>(render_view_host)) {
   notification_registrar_.Add(
       this, content::NOTIFICATION_RENDER_WIDGET_HOST_DESTROYED,
       content::Source<RenderWidgetHost>(render_view_host));
 }
 
 void PopupMenuHelper::ShowPopupMenu(
     const gfx::Rect& bounds,
     int item_height,
     double item_font_size,
     int selected_item,
     const std::vector<WebMenuItem>& items,
     bool right_aligned) {
   // Retain the Cocoa view for the duration of the pop-up so that it can't be
   // dealloced if my Destroy() method is called while the pop-up's up (which
   // would in turn delete me, causing a crash once the -runMenuInView
   // call returns. That's what was happening in <http://crbug.com/33250>).
   RenderWidgetHostViewMac* rwhvm =
-      static_cast<RenderWidgetHostViewMac*>(render_view_host_->view());
+      static_cast<RenderWidgetHostViewMac*>(render_view_host_->GetView());
   scoped_nsobject<RenderWidgetHostViewCocoa> cocoa_view
       ([rwhvm->cocoa_view() retain]);
 
   // Display the menu.
   scoped_nsobject<WebMenuRunner> menu_runner;
   menu_runner.reset([[WebMenuRunner alloc] initWithItems:items
                                                 fontSize:item_font_size
                                             rightAligned:right_aligned]);
 
   {
@@ skipping 29 matching lines @@
 
 void PopupMenuHelper::Observe(
     int type,
     const content::NotificationSource& source,
     const content::NotificationDetails& details) {
   DCHECK(type == content::NOTIFICATION_RENDER_WIDGET_HOST_DESTROYED);
   DCHECK(content::Source<RenderWidgetHost>(source).ptr() == render_view_host_);
   render_view_host_ = NULL;
 }