Add a ExtensionBrowserTest base class

chrome/browser/extensions/extension_browsertest.h

Index: chrome/browser/extensions/extension_browsertest.h
diff --git a/chrome/browser/extensions/extension_browsertest.h b/chrome/browser/extensions/extension_browsertest.h
new file mode 100644
index 0000000000000000000000000000000000000000..385fd9eb8e6e8279ac43ed226927662660685e03
--- /dev/null
+++ b/chrome/browser/extensions/extension_browsertest.h
@@ -0,0 +1,41 @@
+// Copyright (c) 2009 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_EXTENSIONS_EXTENSION_BROWSER_TEST_H_
+#define CHROME_BROWSER_EXTENSIONS_EXTENSION_BROWSER_TEST_H_
+
+#include <string>
+
+#include "base/command_line.h"
+#include "base/file_path.h"
+#include "chrome/common/notification_details.h"
+#include "chrome/common/notification_observer.h"
+#include "chrome/common/notification_registrar.h"
+#include "chrome/common/notification_type.h"
+#include "chrome/test/in_process_browser_test.h"
+
+// Base class for extension browser tests. Provides utilities for loading,
+// unloading, and installing extensions.
+class ExtensionBrowserTest
+    : public InProcessBrowserTest, public NotificationObserver {
+ protected:
+  virtual void SetUpCommandLine(CommandLine* command_line);
+  bool LoadExtension(const FilePath& path);
+  bool InstallExtension(const FilePath& path);
+  void UninstallExtension(const std::string& extension_id);
+
+  bool loaded_;
+  bool installed_;
+  FilePath test_data_dir_;
+
+ private:
+  virtual void Observe(NotificationType type,
+                       const NotificationSource& source,
+                       const NotificationDetails& details);
+  bool WaitForExtensionHostsToLoad();
+
+  NotificationRegistrar registrar_;
+};
+
+#endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_BROWSER_TEST_H_