Adds notification of when zoom level changes. I'm going to need this

chrome/browser/host_zoom_map.cc

 // Copyright (c) 2010 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/host_zoom_map.h"
 
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/chrome_thread.h"
 #include "chrome/browser/pref_service.h"
 #include "chrome/browser/profile.h"
 #include "chrome/browser/scoped_pref_update.h"
 #include "chrome/common/notification_details.h"
+#include "chrome/common/notification_service.h"
 #include "chrome/common/notification_source.h"
 #include "chrome/common/notification_type.h"
 #include "chrome/common/pref_names.h"
 #include "googleurl/src/gurl.h"
 #include "net/base/net_util.h"
 
 HostZoomMap::HostZoomMap(Profile* profile)
     : profile_(profile),
       updating_preferences_(false) {
   Load();
@@ skipping 48 matching lines @@
   std::string host(net::GetHostOrSpecFromURL(url));
 
   {
     AutoLock auto_lock(lock_);
     if (level == 0)
       host_zoom_levels_.erase(host);
     else
       host_zoom_levels_[host] = level;
   }
 
+  Details<std::string> details(&host);
+  NotificationService::current()->Notify(NotificationType::ZOOM_LEVEL_CHANGED,
+                                         Source<Profile>(profile_),
+                                         details);

[Peter Kasting, 2010/06/08 17:54:00]

Nit: You can fit this on two lines

+
   // If we're in incognito mode, don't persist changes to the prefs.  We'll keep
   // them in memory only so they will be forgotten on exiting incognito.
   if (profile_->IsOffTheRecord())
     return;
 
   updating_preferences_ = true;
   {
     ScopedPrefUpdate update(profile_->GetPrefs(), prefs::kPerHostZoomLevels);
     DictionaryValue* host_zoom_dictionary =
         profile_->GetPrefs()->GetMutableDictionary(prefs::kPerHostZoomLevels);
@@ skipping 59 matching lines @@
       return;
     }
   }
 
   NOTREACHED() << "Unexpected preference observed.";
 }
 
 HostZoomMap::~HostZoomMap() {
   Shutdown();
 }