Handle titlebar text updates properly

ash/wm/dialog_frame_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 "ash/wm/dialog_frame_view.h"
 
 #include "grit/ui_resources.h"
 #include "ui/base/hit_test.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/canvas.h"
@@ skipping 102 matching lines @@
 }
 
 void DialogFrameView::ResetWindowControls() {
   // Nothing to do.
 }
 
 void DialogFrameView::UpdateWindowIcon() {
   // Nothing to do.
 }
 
+void DialogFrameView::UpdateWindowTitle() {
+  // Nothing to do.
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // DialogFrameView, views::View overrides:
 
 std::string DialogFrameView::GetClassName() const {
   return kViewClassName;
 }
 
 void DialogFrameView::Layout() {
   title_display_rect_ = GetLocalBounds();
   title_display_rect_.Inset(GetPaddingInsets());
@@ skipping 53 matching lines @@
       GetTitleFont().GetHeight() + GetTitleFont().GetFontSize() -
           kDialogTopPaddingNudge,
       -kDialogHPaddingNudge,
       -kDialogBottomPaddingNudge,
       -kDialogHPaddingNudge);
   return insets;
 }
 
 }  // namespace internal
 }  // namespace views