GTTF: Add a basic new unit test launcher.

content/public/test/test_launcher.cc

 // Copyright (c) 2012 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 "content/public/test/test_launcher.h"
 
 #include <string>
 #include <vector>
 
 #include "base/command_line.h"
@@ skipping 68 matching lines @@
                                           pre_test_name,
                                           command_line,
                                           default_timeout,
                                           was_timeout);
         if (exit_code != 0)
           return exit_code;
       }
     }
   }
 
-  CommandLine new_cmd_line(command_line);
+  CommandLine new_cmd_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(base::kGTestOutputFlag);
+
+  for (CommandLine::SwitchMap::const_iterator iter = switches.begin();
+       iter != switches.end(); ++iter) {
+    new_cmd_line.AppendSwitchNative(iter->first, iter->second);
+  }
 
   // Always enable disabled tests.  This method is not called with disabled
   // tests unless this flag was specified to the browser test executable.
   new_cmd_line.AppendSwitch("gtest_also_run_disabled_tests");
   new_cmd_line.AppendSwitchASCII("gtest_filter", test_name);
   new_cmd_line.AppendSwitch(kSingleProcessTestsFlag);
 
   char* browser_wrapper = getenv("BROWSER_WRAPPER");
   int exit_code = base::LaunchChildGTestProcess(
       new_cmd_line,
@@ skipping 242 matching lines @@
 
   WrapperTestLauncherDelegate delegate(launcher_delegate);
   return base::LaunchTests(&delegate, argc, argv);
 }
 
 TestLauncherDelegate* GetCurrentTestLauncherDelegate() {
   return g_launcher_delegate;
 }
 
 }  // namespace content