Force full GC whenever CollectAllGarbage is meant to trigger a full GC.

test/cctest/test-object-observe.cc

Index: test/cctest/test-object-observe.cc
diff --git a/test/cctest/test-object-observe.cc b/test/cctest/test-object-observe.cc
index 50e2230fbac82c6cea87264704b03e08726f7ba8..abbf2b7a6c00496156bf0e4ab27efb78eae4af53 100644
--- a/test/cctest/test-object-observe.cc
+++ b/test/cctest/test-object-observe.cc
@@ -429,7 +429,7 @@ TEST(ObservationWeakMap) {
   CHECK_EQ(1, NumberOfElements(callbackInfoMap));
   CHECK_EQ(1, NumberOfElements(objectInfoMap));
   CHECK_EQ(1, NumberOfElements(notifierObjectInfoMap));
-  i_isolate->heap()->CollectAllGarbage(i::Heap::kAbortIncrementalMarkingMask);
+  i_isolate->heap()->CollectAllGarbage();
   CHECK_EQ(0, NumberOfElements(callbackInfoMap));
   CHECK_EQ(0, NumberOfElements(objectInfoMap));
   CHECK_EQ(0, NumberOfElements(notifierObjectInfoMap));
@@ -682,7 +682,7 @@ static void CheckSurvivingGlobalObjectsCount(int expected) {
   // the first garbage collection but some of the maps have already
   // been marked at that point.  Therefore some of the maps are not
   // collected until the second garbage collection.
-  CcTest::heap()->CollectAllGarbage(i::Heap::kNoGCFlags);
+  CcTest::heap()->CollectAllGarbage();
   CcTest::heap()->CollectAllGarbage(i::Heap::kMakeHeapIterableMask);
   int count = GetGlobalObjectsCount();
 #ifdef DEBUG