Add GetMessageHandlers to HtmlDialogUIDelegate to allow...

chrome/browser/dom_ui/history_ui.cc

Index: chrome/browser/dom_ui/history_ui.cc
===================================================================
--- chrome/browser/dom_ui/history_ui.cc	(revision 19317)
+++ chrome/browser/dom_ui/history_ui.cc	(working copy)
@@ -96,17 +96,9 @@
 // HistoryHandler
 //
 ////////////////////////////////////////////////////////////////////////////////
-BrowsingHistoryHandler::BrowsingHistoryHandler(DOMUI* dom_ui)
-    : DOMMessageHandler(dom_ui),
-      search_text_(),
+BrowsingHistoryHandler::BrowsingHistoryHandler()
+    : search_text_(),
       remover_(NULL) {
-  dom_ui_->RegisterMessageCallback("getHistory",
-      NewCallback(this, &BrowsingHistoryHandler::HandleGetHistory));
-  dom_ui_->RegisterMessageCallback("searchHistory",
-      NewCallback(this, &BrowsingHistoryHandler::HandleSearchHistory));
-  dom_ui_->RegisterMessageCallback("deleteDay",
-      NewCallback(this, &BrowsingHistoryHandler::HandleDeleteDay));
-
   // Create our favicon data source.
   g_browser_process->io_thread()->message_loop()->PostTask(FROM_HERE,
       NewRunnableMethod(&chrome_url_data_manager,
@@ -124,6 +116,15 @@
     remover_->RemoveObserver(this);
 }
 
+void BrowsingHistoryHandler::RegisterMessages() {
+  dom_ui_->RegisterMessageCallback("getHistory",
+      NewCallback(this, &BrowsingHistoryHandler::HandleGetHistory));
+  dom_ui_->RegisterMessageCallback("searchHistory",
+      NewCallback(this, &BrowsingHistoryHandler::HandleSearchHistory));
+  dom_ui_->RegisterMessageCallback("deleteDay",
+      NewCallback(this, &BrowsingHistoryHandler::HandleDeleteDay));
+}
+
 void BrowsingHistoryHandler::HandleGetHistory(const Value* value) {
   // Anything in-flight is invalid.
   cancelable_consumer_.CancelAllRequests();
@@ -356,7 +357,7 @@
 ////////////////////////////////////////////////////////////////////////////////
 
 HistoryUI::HistoryUI(TabContents* contents) : DOMUI(contents) {
-  AddMessageHandler(new BrowsingHistoryHandler(this));
+  AddMessageHandler((new BrowsingHistoryHandler())->Attach(this));
 
   HistoryUIHTMLSource* html_source = new HistoryUIHTMLSource();