GTTF: Add a basic new unit test launcher.

base/test/test_launcher.h

Index: base/test/test_launcher.h
diff --git a/base/test/test_launcher.h b/base/test/test_launcher.h
index 9b4413dd431349a64ac69d180628c8fd9771f76a..264454f21c7187a4652af32edae1353743379d0e 100644
--- a/base/test/test_launcher.h
+++ b/base/test/test_launcher.h
@@ -30,6 +30,8 @@ extern const char kGTestOutputFlag[];
 
 // Structure containing result of a single test.
 struct TestResult {
+  std::string GetFullName() const { return test_case_name + "." + test_name; }
+
   TestResult();
 
   // Name of the test case (before the dot, e.g. "A" for test "A.B").