PlatformAppApiTest class should not enable experimental APIs by default

chrome/browser/extensions/extension_apitest.h

 // 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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_EXTENSION_APITEST_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_APITEST_H_
 
 #include <deque>
 #include <string>
 
@@ skipping 165 matching lines @@
                             int flags);
 
   // Hold details of the test, set in C++, which can be accessed by
   // javascript using chrome.test.getConfig().
   scoped_ptr<DictionaryValue> test_config_;
 
   // Hold the test WebSocket server.
   scoped_ptr<net::TestServer> websocket_server_;
 };
 
-// PlatformAppApiTest sets up the command-line flags necessary for platform
-// apps (if any).
-class PlatformAppApiTest : public ExtensionApiTest {
- public:
-  PlatformAppApiTest();
-  virtual ~PlatformAppApiTest();
-
-  virtual void SetUpCommandLine(CommandLine* command_line) OVERRIDE;
-};
-
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_APITEST_H_