Don't use GetAsTabContents. Send notifications from TabContentsView instead.

chrome/browser/notifications/balloon_host.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/notifications/balloon_host.h"
 
 #include "chrome/browser/browser_list.h"
 #include "chrome/browser/extensions/extension_process_manager.h"
 #include "chrome/browser/notifications/balloon.h"
 #include "chrome/browser/notifications/notification.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/renderer_host/render_view_host.h"
 #include "chrome/browser/renderer_host/site_instance.h"
 #include "chrome/browser/renderer_preferences_util.h"
 #include "chrome/common/bindings_policy.h"
 #include "chrome/common/notification_service.h"
 #include "chrome/common/notification_source.h"
 #include "chrome/common/notification_type.h"
 #include "chrome/common/render_messages.h"
+#include "chrome/common/render_messages_params.h"
 #include "chrome/common/renderer_preferences.h"
 #include "chrome/common/url_constants.h"
 #include "webkit/glue/webpreferences.h"
 
 BalloonHost::BalloonHost(Balloon* balloon)
     : render_view_host_(NULL),
       balloon_(balloon),
       initialized_(false),
       should_notify_on_disconnect_(false),
       enable_dom_ui_(false) {
@@ skipping 102 matching lines @@
     const ViewHostMsg_DomMessage_Params& params) {
   if (extension_function_dispatcher_.get()) {
     extension_function_dispatcher_->HandleRequest(params);
   }
 }
 
 // RenderViewHostDelegate::View methods implemented to allow links to
 // open pages in new tabs.
 void BalloonHost::CreateNewWindow(
     int route_id,
-    WindowContainerType window_container_type,
-    const string16& frame_name) {
+    const ViewHostMsg_CreateWindow_Params& params) {
   delegate_view_helper_.CreateNewWindow(
       route_id,
       balloon_->profile(),
       site_instance_.get(),
       DOMUIFactory::GetDOMUIType(balloon_->profile(),
           balloon_->notification().content_url()),
       this,
-      window_container_type,
-      frame_name);
+      params.window_container_type,
+      params.frame_name);
 }
 
 void BalloonHost::ShowCreatedWindow(int route_id,
                                     WindowOpenDisposition disposition,
                                     const gfx::Rect& initial_pos,
                                     bool user_gesture) {
   // Don't allow pop-ups from notifications.
   if (disposition == NEW_POPUP)
     return;
 
@@ skipping 90 matching lines @@
 
 void BalloonHost::NotifyDisconnect() {
   if (!should_notify_on_disconnect_)
     return;
 
   should_notify_on_disconnect_ = false;
   NotificationService::current()->Notify(
       NotificationType::NOTIFY_BALLOON_DISCONNECTED,
       Source<BalloonHost>(this), NotificationService::NoDetails());
 }