Support chrome.windows extension API events for browserless Panels.

chrome/browser/ui/panels/test_panel_active_state_observer.cc

 // Copyright (c) 2012 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/ui/panels/test_panel_active_state_observer.h"
 
 #include "chrome/browser/ui/panels/panel.h"
 #include "chrome/common/chrome_notification_types.h"
 
 PanelActiveStateObserver::PanelActiveStateObserver(
@@ skipping 23 matching lines @@
   return panel_->IsActive() == expect_active_;
 }
 
 void PanelActiveStateObserver::Observe(
     int type,
     const content::NotificationSource& source,
     const content::NotificationDetails& details) {
   if (!running_)
     return;
 
+  EXPECT_EQ(panel_->IsActive(), *content::Details<bool>(details).ptr());
+
   if (AtExpectedState()) {
     seen_ = true;
     message_loop_runner_->Quit();
     running_ = false;
   }
 }