Convert location bar bubble delegates to bubble dialog delegates

ui/views/widget/widget_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/widget/widget_delegate.h"
 
 #include "base/strings/utf_string_conversions.h"
 #include "ui/gfx/image/image_skia.h"
 #include "ui/views/bubble/bubble_delegate.h"
 #include "ui/views/view.h"
@@ skipping 14 matching lines @@
 void WidgetDelegate::OnWidgetMove() {
 }
 
 void WidgetDelegate::OnDisplayChanged() {
 }
 
 void WidgetDelegate::OnWorkAreaChanged() {
 }
 
 View* WidgetDelegate::GetInitiallyFocusedView() {
-  return NULL;
+  return nullptr;
 }
 
 BubbleDelegateView* WidgetDelegate::AsBubbleDelegate() {
-  return NULL;
+  return nullptr;
+}
+
+BubbleDialogDelegateView* WidgetDelegate::AsBubbleDialogDelegate() {
+  return nullptr;
 }
 
 DialogDelegate* WidgetDelegate::AsDialogDelegate() {
-  return NULL;
+  return nullptr;
 }
 
 bool WidgetDelegate::CanResize() const {
   return false;
 }
 
 bool WidgetDelegate::CanMaximize() const {
   return false;
 }
 
@@ skipping 149 matching lines @@
 
 const Widget* WidgetDelegateView::GetWidget() const {
   return View::GetWidget();
 }
 
 const char* WidgetDelegateView::GetClassName() const {
   return kViewClassName;
 }
 
 }  // namespace views