cros: Bind hangup red button on remote controller to close web dialog

ui/views/controls/webview/web_dialog_view.h

 // 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.
 
 #ifndef UI_VIEWS_CONTROLS_WEBVIEW_WEB_DIALOG_VIEW_H_
 #define UI_VIEWS_CONTROLS_WEBVIEW_WEB_DIALOG_VIEW_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 125 matching lines @@
   // This view is a delegate to the HTML content since it needs to get notified
   // about when the dialog is closing. For all other actions (besides dialog
   // closing) we delegate to the creator of this view, which we keep track of
   // using this variable.
   ui::WebDialogDelegate* delegate_;
 
   views::WebView* web_view_;
 
   // Whether user is attempting to close the dialog and we are processing
   // beforeunload event.
-  bool is_attempting_close_dialog_;
+  bool is_attempting_close_dialog_ = false;
 
   // Whether beforeunload event has been fired and we have finished processing
   // beforeunload event.
-  bool before_unload_fired_;
+  bool before_unload_fired_ = false;
 
   // Whether the dialog is closed from WebUI in response to a "dialogClose"
   // message.
-  bool closed_via_webui_;
+  bool closed_via_webui_ = false;
 
   // A json string returned to WebUI from a "dialogClose" message.
   std::string dialog_close_retval_;
 
   // Whether CloseContents() has been called.
-  bool close_contents_called_;
+  bool close_contents_called_ = false;
 
   DISALLOW_COPY_AND_ASSIGN(WebDialogView);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_WEBVIEW_WEB_DIALOG_VIEW_H_