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

runtime/vm/unit_test.cc

Index: runtime/vm/unit_test.cc
diff --git a/runtime/vm/unit_test.cc b/runtime/vm/unit_test.cc
index cec626875a33359826a483c1b2182e3ee0522720..6a9c5f511bf8c95b7fffc08ed7234fc80d3270cd 100644
--- a/runtime/vm/unit_test.cc
+++ b/runtime/vm/unit_test.cc
@@ -32,7 +32,8 @@ TestCaseBase* TestCaseBase::first_ = NULL;
 TestCaseBase* TestCaseBase::tail_ = NULL;
 
 
-TestCaseBase::TestCaseBase(const char* name) : next_(NULL), name_(name) {
+TestCaseBase::TestCaseBase(const char* name)
+    : raw_test_(false), next_(NULL), name_(name) {
   if (first_ == NULL) {
     first_ = this;
   } else {
@@ -42,10 +43,23 @@ TestCaseBase::TestCaseBase(const char* name) : next_(NULL), name_(name) {
 }
 
 
+void TestCaseBase::RunAllRaw() {
+  TestCaseBase* test = first_;
+  while (test != NULL) {
+    if (test->raw_test_) {
+      test->RunTest();
+    }
+    test = test->next_;
+  }
+}
+
+
 void TestCaseBase::RunAll() {
   TestCaseBase* test = first_;
   while (test != NULL) {
-    test->RunTest();
+    if (!test->raw_test_) {
+      test->RunTest();
+    }
     test = test->next_;
   }
 }