chrome: Cleanup class/struct forward declarations

chrome/browser/media/test_license_server_config.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_MEDIA_TEST_LICENSE_SERVER_CONFIG_H_
 #define CHROME_BROWSER_MEDIA_TEST_LICENSE_SERVER_CONFIG_H_
 
 #include <string>
 
 #include "base/macros.h"
 
 namespace base {
 class CommandLine;
-class FilePath;
 }
 
 // Class used to start a test license server.
 class TestLicenseServerConfig {
  public:
   TestLicenseServerConfig() {}
   virtual ~TestLicenseServerConfig() {}
 
   // Returns a string containing the URL and port the server is listening to.
   // This URL is directly used by the Web app to request a license, example:
   // http://localhost:8888/license_server
   virtual std::string GetServerURL() = 0;
 
   // Returns true if it successfully sets the command line to run the license
   // server with needed args and switches.
   virtual bool GetServerCommandLine(base::CommandLine* command_line) = 0;
 
   // Returns true if the server is supported on current platform.
   virtual bool IsPlatformSupported() = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(TestLicenseServerConfig);
 };
 
 #endif  // CHROME_BROWSER_MEDIA_TEST_LICENSE_SERVER_CONFIG_H_