Added new type of unit test, RAW_UNIT_TEST_CASE, which is used for tests that can be flaky if run w…

runtime/vm/stack_frame_test.cc

Index: runtime/vm/stack_frame_test.cc
diff --git a/runtime/vm/stack_frame_test.cc b/runtime/vm/stack_frame_test.cc
index d1ebde651b542471cd989cf15fb17f8314cfe4b3..907e94562f17a80d01fb8052b5df0b48533d7fe0 100644
--- a/runtime/vm/stack_frame_test.cc
+++ b/runtime/vm/stack_frame_test.cc
@@ -17,7 +17,7 @@
 namespace dart {
 
 // Unit test for empty stack frame iteration.
-VM_TEST_CASE(EmptyStackFrameIteration) {
+ISOLATE_UNIT_TEST_CASE(EmptyStackFrameIteration) {
   StackFrameIterator iterator(StackFrameIterator::kValidateFrames);
   EXPECT(!iterator.HasNextFrame());
   EXPECT(iterator.NextFrame() == NULL);
@@ -26,7 +26,7 @@ VM_TEST_CASE(EmptyStackFrameIteration) {
 
 
 // Unit test for empty dart stack frame iteration.
-VM_TEST_CASE(EmptyDartStackFrameIteration) {
+ISOLATE_UNIT_TEST_CASE(EmptyDartStackFrameIteration) {
   DartFrameIterator iterator;
   EXPECT(iterator.NextFrame() == NULL);
   VerifyPointersVisitor::VerifyPointers();