Reenable assertion after issue was fixed.

R=lrn@chromium.org
BUG=v8:1672

Review URL: http://codereview.chromium.org/8066009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9483 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/spaces.cc

@@ -839,7 +839,7 @@ void PagedSpace::Verify(ObjectVisitor* visitor) {
       ASSERT(object->address() + size <= top);
       end_of_previous_object = object->address() + size;
     }
-    // TODO(1672): Assert that black_size <= page->LiveBytes().
+    ASSERT_LE(black_size, page->LiveBytes());
   }
   ASSERT(allocation_pointer_found_in_space);
 }