Implement sidebar support for extension action popups

chrome/browser/ui/browser_ui_prefs.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/browser_ui_prefs.h"
 
 #include "base/prefs/pref_registry_simple.h"
 #include "base/prefs/pref_service.h"
 #include "base/prefs/scoped_user_pref_update.h"
 #include "chrome/browser/first_run/first_run.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/pref_names.h"
 #include "components/pref_registry/pref_registry_syncable.h"
 #include "components/translate/core/common/translate_pref_names.h"
 
 namespace chrome {
 
 void RegisterBrowserPrefs(PrefRegistrySimple* registry) {
   registry->RegisterIntegerPref(prefs::kOptionsWindowLastTabIndex, 0);
+  registry->RegisterIntegerPref(prefs::kExtensionSidebarWidth, -1);
   registry->RegisterBooleanPref(prefs::kAllowFileSelectionDialogs, true);
   registry->RegisterIntegerPref(prefs::kShowFirstRunBubbleOption,
                              first_run::FIRST_RUN_BUBBLE_DONT_SHOW);
 }
 
 void RegisterBrowserUserPrefs(user_prefs::PrefRegistrySyncable* registry) {
   registry->RegisterBooleanPref(
       prefs::kHomePageIsNewTabPage,
       true,
       user_prefs::PrefRegistrySyncable::SYNCABLE_PREF);
@@ skipping 88 matching lines @@
   registry->RegisterBooleanPref(prefs::kPluginsAllowOutdated, false);
   registry->RegisterBooleanPref(prefs::kPluginsAlwaysAuthorize, false);
   registry->RegisterBooleanPref(prefs::kClearPluginLSODataEnabled, true);
   registry->RegisterBooleanPref(prefs::kHideWebStoreIcon, false);
 #if !defined(OS_MACOSX)
   registry->RegisterBooleanPref(prefs::kFullscreenAllowed, true);
 #endif
 }
 
 }  // namespace chrome