Tests that make a stack allocated persistent weak and rely on gc need to force gc

Otherwise, if during a fuzzer test incremental marking is running, we'll
crash in the weak callback

BUG=none
TBR=verwaest@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/101843002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18233 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

test/cctest/test-api.cc

@@ -13153,7 +13153,7 @@ THREADED_TEST(NewPersistentHandleFromWeakCallback) {
   // weak callback of the first handle would be able to 'reallocate' it.
   handle1.SetWeak(&handle1, NewPersistentHandleCallback);
   handle2.Reset();
-  CcTest::heap()->CollectAllGarbage(i::Heap::kNoGCFlags);
+  CcTest::heap()->CollectAllGarbage(i::Heap::kAbortIncrementalMarkingMask);
 }
 
 
@@ -13179,7 +13179,7 @@ THREADED_TEST(DoNotUseDeletedNodesInSecondLevelGc) {
   }
   handle1.SetWeak(&handle1, DisposeAndForceGcCallback);
   to_be_disposed.Reset(isolate, handle2);
-  CcTest::heap()->CollectAllGarbage(i::Heap::kNoGCFlags);
+  CcTest::heap()->CollectAllGarbage(i::Heap::kAbortIncrementalMarkingMask);
 }
 
 void DisposingCallback(
@@ -13208,7 +13208,7 @@ THREADED_TEST(NoGlobalHandlesOrphaningDueToWeakCallback) {
   }
   handle2.SetWeak(&handle2, DisposingCallback);
   handle3.SetWeak(&handle3, HandleCreatingCallback);
-  CcTest::heap()->CollectAllGarbage(i::Heap::kNoGCFlags);
+  CcTest::heap()->CollectAllGarbage(i::Heap::kAbortIncrementalMarkingMask);
 }