Fix NOTIFICATION_RENDER_WIDGET_HOST_DESTROYED.

chrome/browser/file_select_helper.cc

 // Copyright (c) 2011 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.
 
 #include "chrome/browser/file_select_helper.h"
 
 #include <string>
 
 #include "base/file_util.h"
 #include "base/string_split.h"
@@ skipping 229 matching lines @@
 
 void FileSelectHelper::RunFileChooser(
     RenderViewHost* render_view_host,
     TabContents* tab_contents,
     const ViewHostMsg_RunFileChooser_Params& params) {
   DCHECK(!render_view_host_);
   render_view_host_ = render_view_host;
   notification_registrar_.RemoveAll();
   notification_registrar_.Add(
       this, content::NOTIFICATION_RENDER_WIDGET_HOST_DESTROYED,
-      Source<RenderViewHost>(render_view_host));
+      Source<RenderWidgetHost>(render_view_host));
 
   if (!select_file_dialog_.get())
     select_file_dialog_ = SelectFileDialog::Create(this);
 
   switch (params.mode) {
     case ViewHostMsg_RunFileChooser_Mode::Open:
       dialog_type_ = SelectFileDialog::SELECT_OPEN_FILE;
       break;
     case ViewHostMsg_RunFileChooser_Mode::OpenMultiple:
       dialog_type_ = SelectFileDialog::SELECT_OPEN_MULTI_FILE;
@@ skipping 32 matching lines @@
                                           RenderViewHost* render_view_host,
                                           const FilePath& path) {
   DCHECK_NE(kFileSelectEnumerationId, request_id);
   StartNewEnumeration(path, request_id, render_view_host);
 }
 
 void FileSelectHelper::Observe(int type,
                                const NotificationSource& source,
                                const NotificationDetails& details) {
   DCHECK(type == content::NOTIFICATION_RENDER_WIDGET_HOST_DESTROYED);
-  DCHECK(Details<RenderViewHost>(details).ptr() == render_view_host_);
+  DCHECK(Source<RenderWidgetHost>(source).ptr() == render_view_host_);
   render_view_host_ = NULL;
 }