Introduce BubbleDialogDelegateView, which extends DialogDelegateView

ui/views/window/dialog_delegate.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 "ui/views/window/dialog_delegate.h"
 
 #include <utility>
 
 #include "base/logging.h"
 #include "build/build_config.h"
@@ skipping 76 matching lines @@
 }
 
 View* DialogDelegate::CreateExtraView() {
   return NULL;
 }
 
 bool DialogDelegate::GetExtraViewPadding(int* padding) {
   return false;
 }
 
-View* DialogDelegate::CreateTitlebarExtraView() {
-  return NULL;
-}
-
 View* DialogDelegate::CreateFootnoteView() {
   return NULL;
 }
 
 bool DialogDelegate::Cancel() {
   return true;
 }
 
 bool DialogDelegate::Accept(bool window_closing) {
   return Accept();
@@ skipping 88 matching lines @@
   BubbleFrameView* frame =
       new BubbleFrameView(gfx::Insets(kPanelVertMargin, kButtonHEdgeMarginNew,
                                       0, kButtonHEdgeMarginNew),
                           gfx::Insets());
   const BubbleBorder::Shadow kShadow = BubbleBorder::SMALL_SHADOW;
   scoped_ptr<BubbleBorder> border(
       new BubbleBorder(BubbleBorder::FLOAT, kShadow, gfx::kPlaceholderColor));
   border->set_use_theme_background_color(true);
   frame->SetBubbleBorder(std::move(border));
   DialogDelegate* delegate = widget->widget_delegate()->AsDialogDelegate();
-  if (delegate) {
-    frame->SetTitlebarExtraView(
-        make_scoped_ptr(delegate->CreateTitlebarExtraView()));
-  }
+  if (delegate)
+    frame->SetFootnoteView(delegate->CreateFootnoteView());
   return frame;
 }
 
 bool DialogDelegate::UseNewStyleForThisDialog() const {
   return supports_new_style_;
 }
 
 const DialogClientView* DialogDelegate::GetDialogClientView() const {
   return GetWidget()->client_view()->AsDialogClientView();
 }
@@ skipping 37 matching lines @@
   state->role = ui::AX_ROLE_DIALOG;
 }
 
 void DialogDelegateView::ViewHierarchyChanged(
     const ViewHierarchyChangedDetails& details) {
   if (details.is_add && details.child == this && GetWidget())
     NotifyAccessibilityEvent(ui::AX_EVENT_ALERT, true);
 }
 
 }  // namespace views