Add support for extended constant pool arrays.

src/objects-debug.cc

Index: src/objects-debug.cc
diff --git a/src/objects-debug.cc b/src/objects-debug.cc
index 5ce04b9d0cc814da6cc6dfdc70308fbe3578262e..762354e184586b41377857b7a16ce2e2efa4555d 100644
--- a/src/objects-debug.cc
+++ b/src/objects-debug.cc
@@ -378,12 +378,14 @@ void FixedDoubleArray::FixedDoubleArrayVerify() {
 
 void ConstantPoolArray::ConstantPoolArrayVerify() {
   CHECK(IsConstantPoolArray());
-  for (int i = 0; i < count_of_code_ptr_entries(); i++) {
-    Address code_entry = get_code_ptr_entry(first_code_ptr_index() + i);
+  ConstantPoolArray::Iterator code_iter(this, ConstantPoolArray::CODE_PTR);
+  while (!code_iter.is_finished()) {
+    Address code_entry = get_code_ptr_entry(code_iter.next_index());
     VerifyPointer(Code::GetCodeFromTargetAddress(code_entry));
   }
-  for (int i = 0; i < count_of_heap_ptr_entries(); i++) {
-    VerifyObjectField(OffsetOfElementAt(first_heap_ptr_index() + i));
+  ConstantPoolArray::Iterator heap_iter(this, ConstantPoolArray::HEAP_PTR);
+  while (!heap_iter.is_finished()) {
+    VerifyObjectField(OffsetOfElementAt(heap_iter.next_index()));
   }
 }