Heap profiler: skip byte arrays that represent free list blocks when counting allocated objects.

src/spaces.cc

Index: src/spaces.cc
diff --git a/src/spaces.cc b/src/spaces.cc
index 43abaa499931de9dff2a948a1caf901663620779..7014172655b75414b2cf63b5e0c50d0759336726 100644
--- a/src/spaces.cc
+++ b/src/spaces.cc
@@ -1540,8 +1540,7 @@ void FreeListNode::set_size(int size_in_bytes) {
 
 
 Address FreeListNode::next() {
-  ASSERT(map() == Heap::raw_unchecked_byte_array_map() ||
-         map() == Heap::raw_unchecked_two_pointer_filler_map());
+  ASSERT(IsFreeListNode(this));
   if (map() == Heap::raw_unchecked_byte_array_map()) {
     ASSERT(Size() >= kNextOffset + kPointerSize);
     return Memory::Address_at(address() + kNextOffset);
@@ -1552,8 +1551,7 @@ Address FreeListNode::next() {
 
 
 void FreeListNode::set_next(Address next) {
-  ASSERT(map() == Heap::raw_unchecked_byte_array_map() ||
-         map() == Heap::raw_unchecked_two_pointer_filler_map());
+  ASSERT(IsFreeListNode(this));
   if (map() == Heap::raw_unchecked_byte_array_map()) {
     ASSERT(Size() >= kNextOffset + kPointerSize);
     Memory::Address_at(address() + kNextOffset) = next;