Update global error UI on sync error change

chrome/browser/sync/sync_global_error.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/sync/sync_global_error.h"
 
 #include "chrome/browser/sync/profile_sync_service.h"
 #include "chrome/browser/sync/profile_sync_service_observer.h"
 #include "chrome/browser/sync/sync_ui_util.h"
+#include "chrome/browser/ui/global_error_service.h"
+#include "chrome/browser/ui/global_error_service_factory.h"
 #include "chrome/common/net/gaia/google_service_auth_error.h"
 #include "grit/chromium_strings.h"
 #include "grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 
 typedef GoogleServiceAuthError AuthError;
 
 using namespace sync_ui_util;
 
 SyncGlobalError::SyncGlobalError(ProfileSyncService* service)
-    : service_(service) {
+    : has_error_(false),
+      service_(service) {
   OnStateChanged();
 }
 
 SyncGlobalError::~SyncGlobalError() {
 }
 
 bool SyncGlobalError::HasBadge() {
 #if defined(OS_CHROMEOS)
   // TODO(sail): Due to http://crbug.com/96608 we don't have a wrench menu
   // item on ChromeOS thus we don't badge the wrench menu either.
@@ skipping 55 matching lines @@
 
 void SyncGlobalError::BubbleViewAcceptButtonPressed() {
   service_->ShowErrorUI();
 }
 
 void SyncGlobalError::BubbleViewCancelButtonPressed() {
   NOTREACHED();
 }
 
 void SyncGlobalError::OnStateChanged() {
-  // TODO(sail): Update the wrench menu button.
+  bool new_has_error = GetStatusLabelsForSyncGlobalError(
+      service_, NULL, NULL, NULL) == SYNC_ERROR;
+  if (new_has_error != has_error_) {
+    has_error_ = new_has_error;
+    GlobalErrorServiceFactory::GetForProfile(
+        service_->profile())->NotifyErrorsChanged(this);
+  }
 }
 
 bool SyncGlobalError::HasCustomizedSyncMenuItem() {
   return GetStatusLabelsForSyncGlobalError(service_, NULL, NULL, NULL) ==
       SYNC_ERROR;
 }