Add GetMessageHandlers to HtmlDialogUIDelegate to allow...

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_
 
+#include <vector>
+
 #include "chrome/browser/dom_ui/dom_ui.h"
 #include "chrome/common/property_bag.h"
 #include "googleurl/src/gurl.h"
 
 namespace gfx {
 class Size;
 }
 
 // Implement this class to receive notifications.
 class HtmlDialogUIDelegate {
  public:
    // Returns true if the contents needs to be run in a modal dialog.
    virtual bool IsDialogModal() const = 0;
 
    // Returns the title of the dialog.
    virtual std::wstring GetDialogTitle() const = 0;
 
    // Get the HTML file path for the content to load in the dialog.
    virtual GURL GetDialogContentURL() const = 0;
 
+   // Get DOMMessageHandler objects to handle messages from the HTML/JS page.
+   // The handlers are used to send and receive messages from the page while it
+   // is still open.  Ownership of each handler is taken over by the DOMUI
+   // hosting the page.
+   virtual void GetDOMMessageHandlers(
+       std::vector<DOMMessageHandler*>* handlers) const = 0;
+
    // Get the size of the dialog.
    virtual void GetDialogSize(gfx::Size* size) const = 0;
 
    // Gets the JSON string input to use when showing the dialog.
    virtual std::string GetDialogArgs() const = 0;
 
    // A callback to notify the delegate that the dialog closed.
    virtual void OnDialogClosed(const std::string& json_retval) = 0;
 
   protected:
@@ skipping 35 matching lines @@
   // DOMUI overrides.
   virtual void RenderViewCreated(RenderViewHost* render_view_host);
 
   // JS message handler.
   void OnDialogClosed(const Value* content);
 
   DISALLOW_COPY_AND_ASSIGN(HtmlDialogUI);
 };
 
 #endif  // CHROME_BROWSER_DOM_UI_HTML_DIALOG_UI_H_