Support javascript gtests in an extension background page.

chrome/browser/resources/chromeos/chromevox/chromevox_browsertest.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_BROWSER_RESOURCES_CHROMEOS_CHROMEVOX_CHROMEVOX_BROWSERTEST_H_
+#define CHROME_BROWSER_RESOURCES_CHROMEOS_CHROMEVOX_CHROMEVOX_BROWSERTEST_H_
+
+#include "chrome/test/base/javascript_browsertest.h"
+#include "content/public/browser/notification_registrar.h"
+#include "content/public/test/test_utils.h"
+
+// A super class that handles javascript-based tests against the ChromeVox
+// component extension.
+class ChromeVoxBrowserTest : public JavaScriptBrowserTest,
+                             public content::NotificationObserver {
+ public:
+  ChromeVoxBrowserTest() : libs_loaded_(false) {}
+
+  virtual ~ChromeVoxBrowserTest() {}
+
+  virtual void Observe(int type,
+                       const content::NotificationSource& source,
+                       const content::NotificationDetails& details);
+
+ protected:
+  // Methods InProcessBrowserTest overrides.
+  virtual void SetUpOnMainThread() OVERRIDE;
+
+  // Implicit overrides assumed by js2gtest.

[Peter Lundblad, 2014/06/08 23:27:21]

I don't know what an implicit override is.  Can you jsut say that this
method is used by js2gtest to ... etc.

[David Tseng, 2014/06/10 05:35:21]

Done.

+  // Runs |test_fixture|.|test_name| using the framework in test_api.js.
+  bool RunJavascriptTestF(bool is_async,
+                          const std::string& test_fixture,
+                          const std::string& test_name);
+
+ private:
+  content::NotificationRegistrar registrar_;
+  scoped_refptr<content::MessageLoopRunner> chromevox_load_looper_;
+  bool libs_loaded_;
+  DISALLOW_COPY_AND_ASSIGN(ChromeVoxBrowserTest);

[Peter Lundblad, 2014/06/08 23:27:21]

nit: blank line before this one.

[David Tseng, 2014/06/10 05:35:21]

Done.

+};
+
+#endif  // CHROME_BROWSER_RESOURCES_CHROMEOS_CHROMEVOX_CHROMEVOX_BROWSERTEST_H_