Add "run_testserver --sync-test" for easy chromiumsync_test.py launching.

net/test/test_server_posix.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 "net/test/test_server.h"
 
 #include <poll.h>
 
 #include <vector>
 
@@ skipping 75 matching lines @@
       return false;
     bytes_read += num_bytes;
   }
   return true;
 }
 
 }  // namespace
 
 namespace net {
 
+// static
+FilePath TestServer::GetAbsolutePythonCommandPath() {
+  return FilePath(FILE_PATH_LITERAL("python"));
+}
+
 bool TestServer::LaunchPython(const FilePath& testserver_path) {
-  CommandLine python_command(FilePath(FILE_PATH_LITERAL("python")));
+  CommandLine python_command(GetAbsolutePythonCommandPath());
   python_command.AppendArgPath(testserver_path);
   if (!AddCommandLineArguments(&python_command))
     return false;
 
   int pipefd[2];
   if (pipe(pipefd) != 0) {
     PLOG(ERROR) << "Could not create pipe.";
     return false;
   }
 
@@ skipping 48 matching lines @@
 
   if (!ParseServerData(server_data)) {
     LOG(ERROR) << "Could not parse server_data: " << server_data;
     return false;
   }
 
   return true;
 }
 
 }  // namespace net