GTTF: Add command-line switches for number of jobs and batch limit.

base/test/test_switches.cc

Index: base/test/test_switches.cc
diff --git a/base/test/test_switches.cc b/base/test/test_switches.cc
index bf7a76a8ea8a597eb94044fcfe4cf5377b1af8c8..b1c57f7700e2a63889b9d070d5864313fa0fbfc7 100644
--- a/base/test/test_switches.cc
+++ b/base/test/test_switches.cc
@@ -8,6 +8,12 @@
 // TODO(phajdan.jr): Clean up the switch names.
 const char switches::kTestLargeTimeout[] = "test-large-timeout";
 
+// Maximum number of tests to run in a single batch.
+const char switches::kTestLauncherBatchLimit[] = "test-launcher-batch-limit";
+
+// Number of parallel test launcher jobs.
+const char switches::kTestLauncherJobs[] = "test-launcher-jobs";
+
 // Path to test results file in our custom test launcher format.
 const char switches::kTestLauncherOutput[] = "test-launcher-output";