Get rid of obsolete unchecked accessors.

src/heap-inl.h

Index: src/heap-inl.h
diff --git a/src/heap-inl.h b/src/heap-inl.h
index bace902d4dce87cc3b33c242e774c713acc08a27..e038453778504ab90d081e7a37bc8942f8c9caa5 100644
--- a/src/heap-inl.h
+++ b/src/heap-inl.h
@@ -607,7 +607,7 @@ void ExternalStringTable::Verify() {
     Object* obj = Object::cast(new_space_strings_[i]);
     // TODO(yangguo): check that the object is indeed an external string.
     ASSERT(heap_->InNewSpace(obj));
-    ASSERT(obj != HEAP->raw_unchecked_the_hole_value());
+    ASSERT(obj != HEAP->the_hole_value());
     if (obj->IsExternalAsciiString()) {
       ExternalAsciiString* string = ExternalAsciiString::cast(obj);
       ASSERT(String::IsAscii(string->GetChars(), string->length()));
@@ -617,7 +617,7 @@ void ExternalStringTable::Verify() {
     Object* obj = Object::cast(old_space_strings_[i]);
     // TODO(yangguo): check that the object is indeed an external string.
     ASSERT(!heap_->InNewSpace(obj));
-    ASSERT(obj != HEAP->raw_unchecked_the_hole_value());
+    ASSERT(obj != HEAP->the_hole_value());
     if (obj->IsExternalAsciiString()) {
       ExternalAsciiString* string = ExternalAsciiString::cast(obj);
       ASSERT(String::IsAscii(string->GetChars(), string->length()));