Remove last vestigial uses of "update needed" png assets.

chrome/browser/ui/views/critical_notification_bubble_view.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/views/critical_notification_bubble_view.h"
 
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/lifetime/application_lifetime.h"
 #include "chrome/browser/upgrade_detector.h"
@@ skipping 70 matching lines @@
 }
 
 base::string16 CriticalNotificationBubbleView::GetWindowTitle() const {
   int seconds = GetRemainingTime();
   return seconds > 0 ? l10n_util::GetPluralStringFUTF16(
                            IDS_CRITICAL_NOTIFICATION_HEADLINE, seconds)
                      : l10n_util::GetStringUTF16(
                            IDS_CRITICAL_NOTIFICATION_HEADLINE_ALTERNATE);
 }
 
-gfx::ImageSkia CriticalNotificationBubbleView::GetWindowIcon() {
-  return *ui::ResourceBundle::GetSharedInstance().GetImageSkiaNamed(
-      IDR_UPDATE_MENU_SEVERITY_HIGH);
-}
-
-bool CriticalNotificationBubbleView::ShouldShowWindowIcon() const {
-  return true;
-}
-
 void CriticalNotificationBubbleView::WindowClosing() {
   refresh_timer_.Stop();
 }
 
 bool CriticalNotificationBubbleView::Cancel() {
   UpgradeDetector::GetInstance()->acknowledge_critical_update();
   content::RecordAction(UserMetricsAction("CriticalNotification_Ignore"));
   // If the counter reaches 0, we set a restart flag that must be cleared if
   // the user selects, for example, "Stay on this page" during an
   // onbeforeunload handler.
@@ skipping 40 matching lines @@
 void CriticalNotificationBubbleView::GetAccessibleNodeData(
     ui::AXNodeData* node_data) {
   node_data->role = ui::AX_ROLE_ALERT;
 }
 
 void CriticalNotificationBubbleView::ViewHierarchyChanged(
     const ViewHierarchyChangedDetails& details) {
   if (details.is_add && details.child == this)
     NotifyAccessibilityEvent(ui::AX_EVENT_ALERT, true);
 }