Clean up TCW, make it solely a hub for 1:1 observer/helper objects.

chrome/browser/ui/content_settings/content_setting_bubble_model.cc

 // Copyright (c) 2011 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/ui/content_settings/content_setting_bubble_model.h"
 
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/content_settings/content_settings_utils.h"
 #include "chrome/browser/content_settings/cookie_settings.h"
 #include "chrome/browser/content_settings/tab_specific_content_settings.h"
@@ skipping 361 matching lines @@
     set_custom_link_enabled(tab_contents && tab_contents->content_settings()->
         load_plugins_link_enabled());
   }
 
   virtual ~ContentSettingPluginBubbleModel() {}
 
  private:
   virtual void OnCustomLinkClicked() OVERRIDE {
     UserMetrics::RecordAction(UserMetricsAction("ClickToPlay_LoadAll_Bubble"));
     DCHECK(tab_contents());
-    RenderViewHost* host = tab_contents()->render_view_host();
+    RenderViewHost* host = tab_contents()->tab_contents()->render_view_host();
     host->Send(new ChromeViewMsg_LoadBlockedPlugins(host->routing_id()));
     set_custom_link_enabled(false);
     tab_contents()->content_settings()->set_load_plugins_link_enabled(false);
   }
 };
 
 class ContentSettingPopupBubbleModel : public ContentSettingSingleRadioGroup {
  public:
   ContentSettingPopupBubbleModel(Browser* browser,
                                  TabContentsWrapper* tab_contents,
@@ skipping 184 matching lines @@
       tab_contents_ = NULL;
       break;
     case chrome::NOTIFICATION_PROFILE_DESTROYED:
       DCHECK(source == content::Source<Profile>(profile_));
       profile_ = NULL;
       break;
     default:
       NOTREACHED();
   }
 }