Move creation and ownership of HostZoomMap to content instead of having every embedder do this.

chrome/browser/ui/toolbar/wrench_menu_model.cc

 // 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.
 
 #include "chrome/browser/ui/toolbar/wrench_menu_model.h"
 
 #include <algorithm>
 #include <cmath>
 
 #include "base/command_line.h"
@@ skipping 17 matching lines @@
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/global_error.h"
 #include "chrome/browser/ui/global_error_service.h"
 #include "chrome/browser/ui/global_error_service_factory.h"
 #include "chrome/browser/ui/toolbar/encoding_menu_controller.h"
 #include "chrome/browser/upgrade_detector.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/profiling.h"
+#include "content/public/browser/host_zoom_map.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/user_metrics.h"
 #include "content/public/browser/web_contents.h"
 #include "grit/chromium_strings.h"
 #include "grit/generated_resources.h"
 #include "grit/theme_resources.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/base/l10n/l10n_util.h"
@@ skipping 154 matching lines @@
       provider_(provider),
       browser_(browser),
       tabstrip_model_(browser_->tabstrip_model()) {
   Build();
   UpdateZoomControls();
 
   tabstrip_model_->AddObserver(this);
 
   registrar_.Add(
       this, content::NOTIFICATION_ZOOM_LEVEL_CHANGED,
-      content::Source<HostZoomMap>(browser_->profile()->GetHostZoomMap()));
+      content::Source<HostZoomMap>(
+          HostZoomMap::GetForBrowserContext(browser_->profile())));
   registrar_.Add(this, content::NOTIFICATION_NAV_ENTRY_COMMITTED,
                  content::NotificationService::AllSources());
 }
 
 WrenchMenuModel::~WrenchMenuModel() {
   if (tabstrip_model_)
     tabstrip_model_->RemoveObserver(this);
 }
 
 bool WrenchMenuModel::DoesCommandIdDismissMenu(int command_id) const {
@@ skipping 348 matching lines @@
         &enable_increment, &enable_decrement);
   }
   zoom_label_ = l10n_util::GetStringFUTF16(
       IDS_ZOOM_PERCENT, base::IntToString16(zoom_percent));
 }
 
 string16 WrenchMenuModel::GetSyncMenuLabel() const {
   return sync_ui_util::GetSyncMenuLabel(ProfileSyncServiceFactory::
       GetInstance()->GetForProfile(browser_->profile()->GetOriginalProfile()));
 }