Add Query() support to FileRef

ppapi/tests/test_file_ref.h

 // Copyright (c) 2011 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 PAPPI_TESTS_TEST_FILE_REF_H_
 #define PAPPI_TESTS_TEST_FILE_REF_H_
 
 #include <string>
 
 #include "ppapi/tests/test_case.h"
 
 class TestFileRef : public TestCase {
  public:
   explicit TestFileRef(TestingInstance* instance) : TestCase(instance) {}
 
   // TestCase implementation.
   virtual bool Init();
   virtual void RunTests(const std::string& filter);
 
  private:
   std::string TestCreate();
   std::string TestGetFileSystemType();
   std::string TestGetName();
   std::string TestGetPath();
   std::string TestGetParent();
   std::string TestMakeDirectory();
   std::string TestQueryAndTouchFile();
   std::string TestDeleteFileAndDirectory();
   std::string TestRenameFileAndDirectory();
+  std::string TestQuery();
   std::string TestFileNameEscaping();
 };
 
 #endif  // PAPPI_TESTS_TEST_FILE_REF_H_