GTTF: Add a basic new unit test launcher.

base/test/test_launcher.cc

 // 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.
 
 #include "base/test/test_launcher.h"
 
 #include "base/at_exit.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/environment.h"
@@ skipping 340 matching lines @@
 TestLauncherDelegate::~TestLauncherDelegate() {
 }
 
 int LaunchChildGTestProcess(const CommandLine& command_line,
                             const std::string& wrapper,
                             base::TimeDelta timeout,
                             bool* was_timeout) {
   CommandLine new_command_line(command_line.GetProgram());
   CommandLine::SwitchMap switches = command_line.GetSwitches();
 
-  // Strip out gtest_output flag because otherwise we would overwrite results
-  // of the other tests.
-  switches.erase(kGTestOutputFlag);
-
   // Strip out gtest_repeat flag - this is handled by the launcher process.
   switches.erase(kGTestRepeatFlag);
 
   for (CommandLine::SwitchMap::const_iterator iter = switches.begin();
        iter != switches.end(); ++iter) {
     new_command_line.AppendSwitchNative((*iter).first, (*iter).second);
   }
 
   // Prepend wrapper after last CommandLine quasi-copy operation. CommandLine
   // does not really support removing switches well, and trying to do that
@@ skipping 67 matching lines @@
 
     // Special value "-1" means "repeat indefinitely".
     if (cycles != -1)
       cycles--;
   }
 
   return exit_code;
 }
 
 }  // namespace base