Add GetMessageHandlers to HtmlDialogUIDelegate to allow...

chrome/browser/dom_ui/tips_handler.cc

Index: chrome/browser/dom_ui/tips_handler.cc
===================================================================
--- chrome/browser/dom_ui/tips_handler.cc	(revision 19317)
+++ chrome/browser/dom_ui/tips_handler.cc	(working copy)
@@ -21,16 +21,17 @@
       L"Tips and recommendations to help you discover interesting websites.";
 }
 
-TipsHandler::TipsHandler(DOMUI* dom_ui)
-    : DOMMessageHandler(dom_ui),
-      dom_ui_(dom_ui) {
-  dom_ui->RegisterMessageCallback("getTips",
-      NewCallback(this, &TipsHandler::HandleGetTips));
-
+DOMMessageHandler* TipsHandler::Attach(DOMUI* dom_ui) {
   tips_cache_ = dom_ui_->GetProfile()->GetPrefs()->
       GetDictionary(prefs::kNTPTipsCache);
+  return DOMMessageHandler::Attach(dom_ui);  
 }
 
+void TipsHandler::RegisterMessages() {
+  dom_ui_->RegisterMessageCallback("getTips",
+      NewCallback(this, &TipsHandler::HandleGetTips));
+}
+
 void TipsHandler::HandleGetTips(const Value* content) {
   // List containing the tips to be displayed.
   ListValue list_value;