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

runtime/vm/virtual_memory_test.cc

Index: runtime/vm/virtual_memory_test.cc
diff --git a/runtime/vm/virtual_memory_test.cc b/runtime/vm/virtual_memory_test.cc
index cc98c035c2a4e167b8fffb62214f35ec7c28b370..c652f8c2b61ad7c32aab287b00b9176c8b4a014d 100644
--- a/runtime/vm/virtual_memory_test.cc
+++ b/runtime/vm/virtual_memory_test.cc
@@ -18,7 +18,7 @@ bool IsZero(char* begin, char* end) {
 }
 
 
-UNIT_TEST_CASE(AllocateVirtualMemory) {
+VM_UNIT_TEST_CASE(AllocateVirtualMemory) {
   const intptr_t kVirtualMemoryBlockSize = 64 * KB;
   VirtualMemory* vm = VirtualMemory::Reserve(kVirtualMemoryBlockSize);
   EXPECT(vm != NULL);
@@ -52,7 +52,7 @@ UNIT_TEST_CASE(AllocateVirtualMemory) {
 }
 
 
-UNIT_TEST_CASE(FreeVirtualMemory) {
+VM_UNIT_TEST_CASE(FreeVirtualMemory) {
   // Reservations should always be handed back to OS upon destruction.
   const intptr_t kVirtualMemoryBlockSize = 10 * MB;
   const intptr_t kIterations = 900;  // Enough to exhaust 32-bit address space.
@@ -89,7 +89,7 @@ UNIT_TEST_CASE(FreeVirtualMemory) {
 }
 
 
-UNIT_TEST_CASE(VirtualMemoryCommitPartial) {
+VM_UNIT_TEST_CASE(VirtualMemoryCommitPartial) {
   const intptr_t kVirtualMemoryBlockSize = 3 * MB;
   VirtualMemory* vm = VirtualMemory::Reserve(kVirtualMemoryBlockSize);
   EXPECT(vm != NULL);