Support disabling unit test batching. Use it for angle_end2end_tests

gpu/angle_end2end_tests_main.cc

Index: gpu/angle_end2end_tests_main.cc
diff --git a/gpu/angle_end2end_tests_main.cc b/gpu/angle_end2end_tests_main.cc
index 008868c2b6ef16fe4cc7c2eea3cf3f7f96532f76..272cf29d880109f5e70d770f7ca6af4af9843db2 100644
--- a/gpu/angle_end2end_tests_main.cc
+++ b/gpu/angle_end2end_tests_main.cc
@@ -26,9 +26,12 @@ int main(int argc, char** argv) {
   testing::InitGoogleMock(&argc, argv);
   testing::AddGlobalTestEnvironment(new ANGLETestEnvironment());
   base::TestSuite test_suite(argc, argv);
-  int rt = base::LaunchUnitTestsSerially(
+  int rt = base::LaunchUnitTestsWithOptions(
       argc,
       argv,
+      1,  // Run tests serially.
+      0,  // Disable batching.
+      true,  // Use job objects.
       base::Bind(&RunHelper, base::Unretained(&test_suite)));
   return rt;
 }