Add filler at the new space top when forcing scavenge.

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 ff9e51a621ab7f4c634d4de79722134265c8eabf..f8757e1c0cf97899902a0df831205d00bdd15af0 100644
--- a/test/cctest/test-heap.cc
+++ b/test/cctest/test-heap.cc
@@ -433,7 +433,7 @@ TEST(WeakGlobalHandlesScavenge) {
                           &TestWeakGlobalHandleCallback);
 
   // Scavenge treats weak pointers as normal roots.
-  heap->PerformScavenge();
+  heap->CollectGarbage(NEW_SPACE);
 
   CHECK((*h1)->IsString());
   CHECK((*h2)->IsHeapNumber());
@@ -518,7 +518,7 @@ TEST(DeleteWeakGlobalHandle) {
                           &TestWeakGlobalHandleCallback);
 
   // Scanvenge does not recognize weak reference.
-  heap->PerformScavenge();
+  heap->CollectGarbage(NEW_SPACE);
 
   CHECK(!WeakPointerCleared);
 
@@ -1436,7 +1436,7 @@ TEST(TestInternalWeakLists) {
 
     // Scavenge treats these references as strong.
     for (int j = 0; j < 10; j++) {
-      CcTest::heap()->PerformScavenge();
+      CcTest::heap()->CollectGarbage(NEW_SPACE);
       CHECK_EQ(opt ? 5 : 0, CountOptimizedUserFunctions(ctx[i]));
     }
 
@@ -1448,14 +1448,14 @@ TEST(TestInternalWeakLists) {
     // Get rid of f3 and f5 in the same way.
     CompileRun("f3=null");
     for (int j = 0; j < 10; j++) {
-      CcTest::heap()->PerformScavenge();
+      CcTest::heap()->CollectGarbage(NEW_SPACE);
       CHECK_EQ(opt ? 4 : 0, CountOptimizedUserFunctions(ctx[i]));
     }
     CcTest::heap()->CollectAllGarbage(Heap::kNoGCFlags);
     CHECK_EQ(opt ? 3 : 0, CountOptimizedUserFunctions(ctx[i]));
     CompileRun("f5=null");
     for (int j = 0; j < 10; j++) {
-      CcTest::heap()->PerformScavenge();
+      CcTest::heap()->CollectGarbage(NEW_SPACE);
       CHECK_EQ(opt ? 3 : 0, CountOptimizedUserFunctions(ctx[i]));
     }
     CcTest::heap()->CollectAllGarbage(Heap::kNoGCFlags);
@@ -1477,7 +1477,7 @@ TEST(TestInternalWeakLists) {
 
     // Scavenge treats these references as strong.
     for (int j = 0; j < 10; j++) {
-      CcTest::heap()->PerformScavenge();
+      CcTest::heap()->CollectGarbage(i::NEW_SPACE);
       CHECK_EQ(kNumTestContexts - i, CountNativeContexts());
     }