Reland: Take 2: Force python test server output to be unbuffered, so it doesn't mix with gtest outpu

net/test/python_utils_unittest.cc

Index: net/test/python_utils_unittest.cc
diff --git a/net/test/python_utils_unittest.cc b/net/test/python_utils_unittest.cc
index 01147747d3e23e004a8d96af7a406af0eab14a90..587dd77f51ce41682b315b9c040e67d35e59cf75 100644
--- a/net/test/python_utils_unittest.cc
+++ b/net/test/python_utils_unittest.cc
@@ -45,12 +45,11 @@ TEST(PythonUtils, Append) {
 }
 
 TEST(PythonUtils, PythonRunTime) {
-  FilePath dir;
-  EXPECT_TRUE(GetPythonRunTime(&dir));
+  CommandLine cmd_line(CommandLine::NO_PROGRAM);
+  EXPECT_TRUE(GetPythonRunTime(&cmd_line));
 
   // Run a python command to print a string and make sure the output is what
   // we want.
-  CommandLine cmd_line(dir);
   cmd_line.AppendArg("-c");
   std::string input("PythonUtilsTest");
   std::string python_cmd = StringPrintf("print '%s';", input.c_str());