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

chrome/browser/ui/views/outdated_upgrade_bubble_view.cc

Index: chrome/browser/ui/views/outdated_upgrade_bubble_view.cc
diff --git a/chrome/browser/ui/views/outdated_upgrade_bubble_view.cc b/chrome/browser/ui/views/outdated_upgrade_bubble_view.cc
index 1df56773e3787378f56d037b3388ba4bf9205677..e32de0d5e76f8c1ab83b2e4e8286e11410d70929 100644
--- a/chrome/browser/ui/views/outdated_upgrade_bubble_view.cc
+++ b/chrome/browser/ui/views/outdated_upgrade_bubble_view.cc
@@ -13,13 +13,11 @@
 #include "chrome/common/pref_names.h"
 #include "chrome/grit/chromium_strings.h"
 #include "chrome/grit/generated_resources.h"
-#include "chrome/grit/theme_resources.h"
 #include "components/prefs/pref_service.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/page_navigator.h"
 #include "content/public/browser/user_metrics.h"
 #include "ui/base/l10n/l10n_util.h"
-#include "ui/base/resource/resource_bundle.h"
 #include "ui/views/controls/label.h"
 #include "ui/views/layout/fill_layout.h"
 #include "ui/views/layout/layout_constants.h"
@@ -100,15 +98,6 @@ base::string16 OutdatedUpgradeBubbleView::GetWindowTitle() const {
   return l10n_util::GetStringUTF16(IDS_UPGRADE_BUBBLE_TITLE);
 }
 
-gfx::ImageSkia OutdatedUpgradeBubbleView::GetWindowIcon() {
-  return *ui::ResourceBundle::GetSharedInstance().GetImageSkiaNamed(
-      IDR_UPDATE_MENU_SEVERITY_HIGH);
-}
-
-bool OutdatedUpgradeBubbleView::ShouldShowWindowIcon() const {
-  return true;
-}
-
 bool OutdatedUpgradeBubbleView::Cancel() {
   content::RecordAction(base::UserMetricsAction("OutdatedUpgradeBubble.Later"));
   return true;