Add a SigninAllowed policy.

chrome/browser/ui/browser_command_controller.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_command_controller.h"
 
 #include "base/prefs/pref_service.h"
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/defaults.h"
@@ skipping 183 matching lines @@
                  base::Unretained(this)));
   profile_pref_registrar_.Add(
       prefs::kIncognitoModeAvailability,
       base::Bind(
           &BrowserCommandController::UpdateCommandsForIncognitoAvailability,
           base::Unretained(this)));
   profile_pref_registrar_.Add(
       prefs::kPrintingEnabled,
       base::Bind(&BrowserCommandController::UpdatePrintingState,
                  base::Unretained(this)));
+  pref_signin_allowed_.Init(
+      prefs::kSigninAllowed,
+      profile()->GetOriginalProfile()->GetPrefs(),
+      base::Bind(&BrowserCommandController::OnSigninAllowedPrefChange,
+                 base::Unretained(this)));
 
   InitCommandState();
 
   TabRestoreService* tab_restore_service =
       TabRestoreServiceFactory::GetForProfile(profile());
   if (tab_restore_service) {
     tab_restore_service->AddObserver(this);
     TabRestoreServiceChanged(tab_restore_service);
   }
 }
@@ skipping 519 matching lines @@
 void BrowserCommandController::OnProfileNameChanged(
     const base::FilePath& profile_path,
     const string16& old_profile_name) {
 }
 
 void BrowserCommandController::OnProfileAvatarChanged(
     const base::FilePath& profile_path) {
 }
 
 ////////////////////////////////////////////////////////////////////////////////
+// BrowserCommandController, SigninPrefObserver implementation:
+
+void BrowserCommandController::OnSigninAllowedPrefChange() {
+  // For unit tests, we don't have a window.
+  if (!window())
+    return;
+  UpdateShowSyncState(IsShowingMainUI(window()->IsFullscreen()));
+}
+
 // BrowserCommandController, TabStripModelObserver implementation:
 
 void BrowserCommandController::TabInsertedAt(WebContents* contents,
                                              int index,
                                              bool foreground) {
   AddInterstitialObservers(contents);
 }
 
 void BrowserCommandController::TabDetachedAt(WebContents* contents, int index) {
   RemoveInterstitialObservers(contents);
@@ skipping 121 matching lines @@
                                         !profile()->IsGuestSession());
   command_updater_.UpdateCommandEnabled(IDC_SHOW_DOWNLOADS, true);
   command_updater_.UpdateCommandEnabled(IDC_HELP_PAGE_VIA_KEYBOARD, true);
   command_updater_.UpdateCommandEnabled(IDC_HELP_PAGE_VIA_MENU, true);
   command_updater_.UpdateCommandEnabled(IDC_BOOKMARKS_MENU,
                                         !profile()->IsGuestSession());
   command_updater_.UpdateCommandEnabled(IDC_RECENT_TABS_MENU,
                                         !profile()->IsGuestSession() &&
                                         !profile()->IsOffTheRecord());
 
-  command_updater_.UpdateCommandEnabled(IDC_SHOW_SIGNIN, true);
+  UpdateShowSyncState(true);
 
   // Initialize other commands based on the window type.
   bool normal_window = browser_->is_type_tabbed();
 
   // Navigation commands
   command_updater_.UpdateCommandEnabled(IDC_HOME, normal_window);
 
   // Window management commands
   command_updater_.UpdateCommandEnabled(IDC_SELECT_NEXT_TAB, normal_window);
   command_updater_.UpdateCommandEnabled(IDC_SELECT_PREVIOUS_TAB,
@@ skipping 214 matching lines @@
   command_updater_.UpdateCommandEnabled(
       IDC_FOCUS_NEXT_PANE, main_not_fullscreen);
   command_updater_.UpdateCommandEnabled(
       IDC_FOCUS_PREVIOUS_PANE, main_not_fullscreen);
   command_updater_.UpdateCommandEnabled(
       IDC_FOCUS_BOOKMARKS, main_not_fullscreen);
 
   // Show various bits of UI
   command_updater_.UpdateCommandEnabled(IDC_DEVELOPER_MENU, show_main_ui);
   command_updater_.UpdateCommandEnabled(IDC_FEEDBACK, show_main_ui);
+  UpdateShowSyncState(show_main_ui);
 
   // Settings page/subpages are forced to open in normal mode. We disable these
   // commands when incognito is forced.
   const bool options_enabled = show_main_ui &&
       IncognitoModePrefs::GetAvailability(
           profile()->GetPrefs()) != IncognitoModePrefs::FORCED;
   command_updater_.UpdateCommandEnabled(IDC_OPTIONS, options_enabled);
   command_updater_.UpdateCommandEnabled(IDC_IMPORT_SETTINGS, options_enabled);
 
   command_updater_.UpdateCommandEnabled(IDC_EDIT_SEARCH_ENGINES, show_main_ui);
@@ skipping 52 matching lines @@
     if (metro_enable_printing)
       metro_enable_printing(print_enabled);
   }
 #endif
 }
 
 void BrowserCommandController::UpdateSaveAsState() {
   command_updater_.UpdateCommandEnabled(IDC_SAVE_PAGE, CanSavePage(browser_));
 }
 
+void BrowserCommandController::UpdateShowSyncState(bool show_main_ui) {
+  command_updater_.UpdateCommandEnabled(
+      IDC_SHOW_SYNC_SETUP, show_main_ui && pref_signin_allowed_.GetValue());
+}
+
 // static
 void BrowserCommandController::UpdateOpenFileState(
     CommandUpdater* command_updater) {
   bool enabled = true;
   PrefService* local_state = g_browser_process->local_state();
   if (local_state)
     enabled = local_state->GetBoolean(prefs::kAllowFileSelectionDialogs);
 
   command_updater->UpdateCommandEnabled(IDC_OPEN_FILE, enabled);
 }
@@ skipping 31 matching lines @@
 
 BrowserWindow* BrowserCommandController::window() {
   return browser_->window();
 }
 
 Profile* BrowserCommandController::profile() {
   return browser_->profile();
 }
 
 }  // namespace chrome