Revert "Fix a ton of compiler warnings."

chrome/test/browser/browser_test_runner.h

 // 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_TEST_BROWSER_BROWSER_TEST_RUNNER_
 #define CHROME_TEST_BROWSER_BROWSER_TEST_RUNNER_
 
 #include <string>
 #include <vector>
 
@@ skipping 26 matching lines @@
   // false if it failed.
   virtual bool RunTest(const std::string& test_name) = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(BrowserTestRunner);
 };
 
 class BrowserTestRunnerFactory {
  public:
   virtual BrowserTestRunner* CreateBrowserTestRunner() const = 0;
- protected:
-  ~BrowserTestRunnerFactory() {}
 };
 
 }  // namespace
 
 #endif  // CHROME_TEST_BROWSER_BROWSER_TEST_RUNNER_