Ensure WebView notifies desktop automation on creation, destruction, and change

chrome/test/base/extension_load_waiter_one_shot.h

 // Copyright 2014 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.
 
 #ifndef CHROME_TEST_BASE_EXTENSION_LOAD_WAITER_ONE_SHOT_H_
 #define CHROME_TEST_BASE_EXTENSION_LOAD_WAITER_ONE_SHOT_H_
 
 #include "base/callback_forward.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/test/test_utils.h"
 
 namespace content {
 class BrowserContext;
 }  // namespace content
 
 // A class used to wait for an extension to load. Callers provide a load
 // callback and can block until the extension loads.
 class ExtensionLoadWaiterOneShot : public content::NotificationObserver {
  public:
   ExtensionLoadWaiterOneShot();
-  virtual ~ExtensionLoadWaiterOneShot();
+  ~ExtensionLoadWaiterOneShot() override;
 
   // Waits for extension with |extension_id| to load. The id should be a pointer
   // to a static char array.
   void WaitForExtension(const char* extension_id, const base::Closure& load_cb);
 
   // content::NotificationObserver overrides.
-  virtual void Observe(int type,
-                       const content::NotificationSource& source,
-                       const content::NotificationDetails& details) override;
+  void Observe(int type,
+               const content::NotificationSource& source,
+               const content::NotificationDetails& details) override;
 
   // Get the browser context associated with the loaded extension. Returns
   // NULL if |WaitForExtension| was not previously called.
   content::BrowserContext* browser_context() { return browser_context_; }
 
   // Get the id of the loaded extension.
   const char* extension_id() { return extension_id_; }
 
  private:
   content::NotificationRegistrar registrar_;
   scoped_refptr<content::MessageLoopRunner> load_looper_;
   const char* extension_id_;
   content::BrowserContext* browser_context_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionLoadWaiterOneShot);
 };
 
 #endif  // CHROME_TEST_BASE_EXTENSION_LOAD_WAITER_ONE_SHOT_H_