Changed AppListDialogContentsView to extend DialogDelegate

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 41 matching lines @@
 }
 
 bool WidgetDelegate::CanActivate() const {
   return can_activate_;
 }
 
 ui::ModalType WidgetDelegate::GetModalType() const {
   return ui::MODAL_TYPE_NONE;
 }
 
+bool WidgetDelegate::IsDialogBox() {
+  // TODO(sashab): Return false by default here, and add an override to all

[tapted, 2014/07/21 00:34:07]

I think this CL is small enough to do this now  - pretty sure just
dialog_delegate.h/cc needs to change.

[sashab, 2014/07/21 03:36:21]

Oh, I didn't think of that, for some reason :) Done.

+  // DialogDelegate children to return true.
+  return !!AsDialogDelegate();
+}
+
 ui::AXRole WidgetDelegate::GetAccessibleWindowRole() const {
   return ui::AX_ROLE_WINDOW;
 }
 
 base::string16 WidgetDelegate::GetAccessibleWindowTitle() const {
   return GetWindowTitle();
 }
 
 base::string16 WidgetDelegate::GetWindowTitle() const {
   return base::string16();
@@ skipping 120 matching lines @@
 
 Widget* WidgetDelegateView::GetWidget() {
   return View::GetWidget();
 }
 
 const Widget* WidgetDelegateView::GetWidget() const {
   return View::GetWidget();
 }
 
 }  // namespace views