Fix crash when opening "Select certificate file" in OOBE.

chrome/browser/chromeos/login/background_view.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/chromeos/login/background_view.h"
 
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
 #include "app/x11_util.h"
 #include "base/string_util.h"
@@ skipping 123 matching lines @@
 }
 
 void BackgroundView::OpenButtonOptions(const views::View* button_view) const {
   // TODO(avayvod): Add some dialog for options or remove them completely.
 }
 
 bool BackgroundView::IsButtonVisible(const views::View* button_view) const {
   return true;
 }
 
+bool BackgroundView::IsBrowserMode() const {
+  return false;
+}
+
 void BackgroundView::LocaleChanged() {
   Layout();
   SchedulePaint();
 }
 
 void BackgroundView::InitStatusArea() {
   DCHECK(status_area_ == NULL);
   status_area_ = new StatusAreaView(this);
   status_area_->Init();
   AddChildView(status_area_);
@@ skipping 70 matching lines @@
             kBootTimesNoChromeExec,
             boot_times.firmware + boot_times.login_prompt_ready,
             boot_times.firmware,
             boot_times.pre_startup,
             boot_times.login_prompt_ready - boot_times.pre_startup);
   }
   boot_times_label_->SetText(ASCIIToWide(boot_times_text));
 }
 
 }  // namespace chromeos