Remove Profile code from HostZoomMap.

content/common/notification_type.h

 // 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.
 
 #ifndef CONTENT_COMMON_NOTIFICATION_TYPE_H_
 #define CONTENT_COMMON_NOTIFICATION_TYPE_H_
 #pragma once
 
 // This file describes various types used to describe and filter notifications
 // that pass through the NotificationService.
@@ skipping 1241 matching lines @@
     // Sent before the repost form warning is brought up.
     // The source is a NavigationController.
     REPOST_WARNING_SHOWN,
 
 #if defined(TOOLKIT_VIEWS)
     // Sent when a bookmark's context menu is shown. Used to notify
     // tests that the context menu has been created and shown.
     BOOKMARK_CONTEXT_MENU_SHOWN,
 #endif
 
-    // Sent when the zoom level changes. The source is the profile.
+    // Sent when the zoom level changes. The source is the HostZoomMap.  The
+    // details is a string of the hostname for which the zoom changed.  In case
+    // of a temporary zoom level change, the details is an empty string.
     ZOOM_LEVEL_CHANGED,
 
     // Sent when the tab's closeable state has changed due to increase/decrease
     // in number of tabs in browser or increase/decrease in number of browsers.
     // Details<bool> contain the closeable flag while source is AllSources.
     // This is only sent from ChromeOS's TabCloseableStateWatcher.
     TAB_CLOSEABLE_STATE_CHANGED,
 
     // Sent each time the InstantController is updated.
     INSTANT_CONTROLLER_UPDATED,
@@ skipping 45 matching lines @@
 };
 
 inline bool operator==(NotificationType::Type a, NotificationType b) {
   return a == b.value;
 }
 inline bool operator!=(NotificationType::Type a, NotificationType b) {
   return a != b.value;
 }
 
 #endif  // CONTENT_COMMON_NOTIFICATION_TYPE_H_