Revert "GTTF: Remove message loop hooks from TestLauncherDelegate"

content/public/test/test_launcher.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 CONTENT_PUBLIC_TEST_TEST_LAUNCHER_H_
 #define CONTENT_PUBLIC_TEST_TEST_LAUNCHER_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 24 matching lines @@
 // Flag that causes only the kEmptyTestName test to be run.
 extern const char kWarmupFlag[];
 
 class TestLauncherDelegate {
  public:
   virtual std::string GetEmptyTestName() = 0;
   virtual int RunTestSuite(int argc, char** argv) = 0;
   virtual bool AdjustChildProcessCommandLine(
       CommandLine* command_line,
       const base::FilePath& temp_data_dir) = 0;
+  virtual void PreRunMessageLoop(base::RunLoop* run_loop) {}
+  virtual void PostRunMessageLoop() {}
   virtual ContentMainDelegate* CreateContentMainDelegate() = 0;
 
  protected:
   virtual ~TestLauncherDelegate();
 };
 
 int LaunchTests(TestLauncherDelegate* launcher_delegate,
                 int argc,
                 char** argv) WARN_UNUSED_RESULT;
 
 TestLauncherDelegate* GetCurrentTestLauncherDelegate();
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_TEST_TEST_LAUNCHER_H_