[zoom bubble] Fix my stupidity and restore the proper host handling

chrome/browser/ui/zoom/zoom_controller.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_ZOOM_ZOOM_CONTROLLER_H_
 #define CHROME_BROWSER_UI_ZOOM_ZOOM_CONTROLLER_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
+#include "base/gtest_prod_util.h"
 #include "base/prefs/public/pref_observer.h"
 #include "chrome/browser/api/prefs/pref_member.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/browser/web_contents_user_data.h"
 
 class ZoomObserver;
 
 namespace content {
@@ skipping 46 matching lines @@
   int zoom_percent_;
 
   content::NotificationRegistrar registrar_;
 
   // Used to access the default zoom level preference.
   DoublePrefMember default_zoom_level_;
 
   // Observer receiving notifications on state changes.
   ZoomObserver* observer_;
 
+  FRIEND_TEST_ALL_PREFIXES(ZoomControllerTest, DidNavigateMainFrame);
+  FRIEND_TEST_ALL_PREFIXES(ZoomControllerTest, Observe);
+  FRIEND_TEST_ALL_PREFIXES(ZoomControllerTest, OnPreferenceChanged);
+
   DISALLOW_COPY_AND_ASSIGN(ZoomController);
 };
 
 #endif  // CHROME_BROWSER_UI_ZOOM_ZOOM_CONTROLLER_H_