Fix Heap::IsHeapIterable.

test/cctest/test-heap.cc

Index: test/cctest/test-heap.cc
diff --git a/test/cctest/test-heap.cc b/test/cctest/test-heap.cc
index 22d2458ceb98f02b155c36e608a5add4c0a97b09..b496362f7bd9a21f8524d443412e14882e2829e9 100644
--- a/test/cctest/test-heap.cc
+++ b/test/cctest/test-heap.cc
@@ -891,7 +891,7 @@ TEST(StringAllocation) {
 static int ObjectsFoundInHeap(Heap* heap, Handle<Object> objs[], int size) {
   // Count the number of objects found in the heap.
   int found_count = 0;
-  heap->EnsureHeapIsIterable();
+  heap->MakeHeapIterable();
   HeapIterator iterator(heap);
   for (HeapObject* obj = iterator.next(); obj != NULL; obj = iterator.next()) {
     for (int i = 0; i < size; i++) {
@@ -1630,7 +1630,7 @@ TEST(TestSizeOfObjects) {
 
 TEST(TestSizeOfObjectsVsHeapIteratorPrecision) {
   CcTest::InitializeVM();
-  CcTest::heap()->EnsureHeapIsIterable();
+  CcTest::heap()->MakeHeapIterable();
   intptr_t size_of_objects_1 = CcTest::heap()->SizeOfObjects();
   HeapIterator iterator(CcTest::heap());
   intptr_t size_of_objects_2 = 0;