Cloud Print Dialog work.

chrome/browser/dom_ui/html_dialog_ui.h

 // Copyright (c) 2006-2008 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 CHROME_BROWSER_DOM_UI_HTML_DIALOG_UI_H_
 #define CHROME_BROWSER_DOM_UI_HTML_DIALOG_UI_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 33 matching lines @@
 
   // A callback to notify the delegate that the dialog closed.
   virtual void OnDialogClosed(const std::string& json_retval) = 0;
 
   // A callback to notify the delegate that the contents have gone
   // away. Only relevant if your dialog hosts code that calls
   // windows.close() and you've allowed that.  If the output parameter
   // is set to true, then the dialog is closed.  The default is false.
   virtual void OnCloseContents(TabContents* source, bool* out_close_dialog) = 0;
 
+  // A callback to allow the delegate to dictate that the window should not
+  // have a title bar.  This is useful when presenting branded interfaces.
+  virtual bool ShouldShowDialogTitle() const = 0;
+
  protected:
   virtual ~HtmlDialogUIDelegate() {}
 };
 
 // Displays file URL contents inside a modal HTML dialog.
 //
 // This application really should not use TabContents + DOMUI. It should instead
 // just embed a RenderView in a dialog and be done with it.
 //
 // Before loading a URL corresponding to this DOMUI, the caller should set its
@@ skipping 37 matching lines @@
 // Intended to be the place to collect the settings and lockdowns
 // necessary for running external UI conponents securely (e.g., the
 // cloud print dialog).
 class ExternalHtmlDialogUI : public HtmlDialogUI {
  public:
   explicit ExternalHtmlDialogUI(TabContents* tab_contents);
   virtual ~ExternalHtmlDialogUI();
 };
 
 #endif  // CHROME_BROWSER_DOM_UI_HTML_DIALOG_UI_H_