Implement support for disabling sync through configuration management.

chrome/browser/browser.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/browser.h"
 
 #if defined(OS_WIN)
 #include <shellapi.h>
 #include <windows.h>
 #endif  // OS_WIN
@@ skipping 218 matching lines @@
     // might show vertical tabs but not show an option to turn them off.
     use_vertical_tabs_.SetValue(false);
   }
   UpdateTabStripModelInsertionPolicy();
 
   tab_restore_service_ = profile->GetTabRestoreService();
   if (tab_restore_service_) {
     tab_restore_service_->AddObserver(this);
     TabRestoreServiceChanged(tab_restore_service_);
   }
+
+  if (profile_->GetProfileSyncService())
+    profile_->GetProfileSyncService()->AddObserver(this);
 }
 
 Browser::~Browser() {
   // The tab strip should not have any significant tabs at this point.
   DCHECK(!tabstrip_model_.HasNonPhantomTabs());
   tabstrip_model_.RemoveObserver(this);
 
+  if (profile_->GetProfileSyncService())
+    profile_->GetProfileSyncService()->RemoveObserver(this);
+
   BrowserList::RemoveBrowser(this);
 
 #if defined(OS_WIN) || defined(OS_LINUX)
   if (!BrowserList::HasBrowserWithProfile(profile_)) {
     // We're the last browser window with this profile. We need to nuke the
     // TabRestoreService, which will start the shutdown of the
     // NavigationControllers and allow for proper shutdown. If we don't do this
     // chrome won't shutdown cleanly, and may end up crashing when some
     // thread tries to use the IO thread (or another thread) that is no longer
     // valid.
@@ skipping 796 matching lines @@
   command_updater_.UpdateCommandEnabled(
       IDC_FOCUS_BOOKMARKS, main_not_fullscreen_or_popup);
   command_updater_.UpdateCommandEnabled(
       IDC_FOCUS_CHROMEOS_STATUS, main_not_fullscreen_or_popup);
 
   // Show various bits of UI
   command_updater_.UpdateCommandEnabled(IDC_DEVELOPER_MENU, show_main_ui);
   command_updater_.UpdateCommandEnabled(IDC_REPORT_BUG, show_main_ui);
   command_updater_.UpdateCommandEnabled(IDC_SHOW_BOOKMARK_BAR, show_main_ui);
   command_updater_.UpdateCommandEnabled(IDC_IMPORT_SETTINGS, show_main_ui);
-  command_updater_.UpdateCommandEnabled(
-      IDC_SYNC_BOOKMARKS, show_main_ui && ProfileSyncService::IsSyncEnabled());
+  command_updater_.UpdateCommandEnabled(IDC_SYNC_BOOKMARKS,
+      show_main_ui && profile_->IsSyncAccessible());
   command_updater_.UpdateCommandEnabled(IDC_OPTIONS, show_main_ui);
   command_updater_.UpdateCommandEnabled(IDC_EDIT_SEARCH_ENGINES, show_main_ui);
   command_updater_.UpdateCommandEnabled(IDC_VIEW_PASSWORDS, show_main_ui);
   command_updater_.UpdateCommandEnabled(IDC_ABOUT, show_main_ui);
   command_updater_.UpdateCommandEnabled(IDC_SHOW_APP_MENU, show_main_ui);
   command_updater_.UpdateCommandEnabled(IDC_SHOW_PAGE_MENU, show_main_ui);
   command_updater_.UpdateCommandEnabled(IDC_TOGGLE_VERTICAL_TABS, show_main_ui);
 }
 
 bool Browser::OpenAppsPanelAsNewTab() {
@@ skipping 1950 matching lines @@
       else
         NOTREACHED();
       break;
     }
 
     default:
       NOTREACHED() << "Got a notification we didn't register for.";
   }
 }
 
+///////////////////////////////////////////////////////////////////////////////
+// Browser, ProfileSyncServiceObserver implementation:
+
+void Browser::OnStateChanged() {
+  DCHECK(profile_->GetProfileSyncService());
+
+#if !defined(OS_MACOSX)
+  const bool show_main_ui = (type() == TYPE_NORMAL) && !window_->IsFullscreen();
+#else
+  const bool show_main_ui = (type() == TYPE_NORMAL);
+#endif
+
+  command_updater_.UpdateCommandEnabled(IDC_SYNC_BOOKMARKS,
+      show_main_ui && profile_->IsSyncAccessible());
+}
 
 ///////////////////////////////////////////////////////////////////////////////
 // Browser, Command and state updating (private):
 
 void Browser::InitCommandState() {
   // All browser commands whose state isn't set automagically some other way
   // (like Back & Forward with initial page load) must have their state
   // initialized here, otherwise they will be forever disabled.
 
   // Navigation commands
@@ skipping 930 matching lines @@
 }
 
 bool Browser::IsPinned(TabContents* source) {
   int index = tabstrip_model_.GetIndexOfTabContents(source);
   if (index == TabStripModel::kNoTab) {
     NOTREACHED() << "IsPinned called for tab not in our strip";
     return false;
   }
   return tabstrip_model_.IsTabPinned(index);
 }