Get rid of PrefService::GetMutableDictionary/GetMutableList

chrome/browser/ui/views/chrome_views_delegate.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/views/chrome_views_delegate.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/prefs/pref_service.h"
+#include "chrome/browser/prefs/scoped_user_pref_update.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/views/accessibility_event_router_views.h"
 #include "chrome/browser/ui/window_sizer.h"
 #include "chrome/common/pref_names.h"
 #include "ui/base/clipboard/clipboard.h"
 #include "ui/gfx/rect.h"
 #include "views/widget/native_widget.h"
 #include "views/widget/widget.h"
 #include "views/window/window.h"
 
@@ skipping 31 matching lines @@
 
 void ChromeViewsDelegate::SaveWindowPlacement(views::Window* window,
                                               const std::wstring& window_name,
                                               const gfx::Rect& bounds,
                                               bool maximized) {
   PrefService* prefs = GetPrefsForWindow(window);
   if (!prefs)
     return;
 
   DCHECK(prefs->FindPreference(WideToUTF8(window_name).c_str()));
-  DictionaryValue* window_preferences =
-      prefs->GetMutableDictionary(WideToUTF8(window_name).c_str());
+  DictionaryPrefUpdate update(prefs, WideToUTF8(window_name).c_str());
+  DictionaryValue* window_preferences = update.Get();
   window_preferences->SetInteger("left", bounds.x());
   window_preferences->SetInteger("top", bounds.y());
   window_preferences->SetInteger("right", bounds.right());
   window_preferences->SetInteger("bottom", bounds.bottom());
   window_preferences->SetBoolean("maximized", maximized);
 
   scoped_ptr<WindowSizer::MonitorInfoProvider> monitor_info_provider(
       WindowSizer::CreateDefaultMonitorInfoProvider());
   gfx::Rect work_area(
       monitor_info_provider->GetMonitorWorkAreaMatching(bounds));
@@ skipping 62 matching lines @@
 }
 #endif
 
 void ChromeViewsDelegate::AddRef() {
   g_browser_process->AddRefModule();
 }
 
 void ChromeViewsDelegate::ReleaseRef() {
   g_browser_process->ReleaseModule();
 }