Fix handling of BROWSER_WRAPPER in the test launcher.

base/test/test_launcher.h

 // Copyright 2013 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 BASE_TEST_TEST_LAUNCHER_H_
 #define BASE_TEST_TEST_LAUNCHER_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 54 matching lines @@
 
   // If the delegate is running tests asynchronously, it must finish
   // running all pending tests and call their callbacks before returning
   // from this method.
   virtual void RunRemainingTests() = 0;
 
  protected:
   virtual ~TestLauncherDelegate();
 };
 
+// Launches a child process (assumed to be gtest-based binary)
+// using |command_line|. If |wrapper| is not empty, it is prepended
+// to the final command line. If the child process is still running
+// after |timeout|, it is terminated and |*was_timeout| is set to true.
 int LaunchChildGTestProcess(const CommandLine& command_line,
+                            const std::string& wrapper,
                             base::TimeDelta timeout,
                             bool* was_timeout);
 
 // Launches GTest-based tests from the current executable
 // using |launcher_delegate|.
 int LaunchTests(TestLauncherDelegate* launcher_delegate,
                 int argc,
                 char** argv) WARN_UNUSED_RESULT;
 
 }  // namespace base
 
 #endif  // BASE_TEST_TEST_LAUNCHER_H_