Use ASCII strings for switch names.

chrome/test/test_launcher/test_runner.cc

Index: chrome/test/test_launcher/test_runner.cc
diff --git a/chrome/test/test_launcher/test_runner.cc b/chrome/test/test_launcher/test_runner.cc
index 4fb34cd3e68b40651979846c8e77cbc43b3f769d..fa4cc6e556c28f25f75326024d911be6ab760590 100644
--- a/chrome/test/test_launcher/test_runner.cc
+++ b/chrome/test/test_launcher/test_runner.cc
@@ -14,9 +14,8 @@
 
 namespace {
 
-const wchar_t* const kGTestListTestsFlag = L"gtest_list_tests";
-const wchar_t* const kGTestRunDisabledTestsFlag =
-    L"gtest_also_run_disabled_tests";
+const char kGTestListTestsFlag[] = "gtest_list_tests";
+const char kGTestRunDisabledTestsFlag[] = "gtest_also_run_disabled_tests";
 
 // Retrieves the list of tests to run by running gtest with the
 // --gtest_list_tests flag in a forked process and parsing its output.