Move handlified functions from handles.cc to objects.cc

src/isolate.h

Index: src/isolate.h
diff --git a/src/isolate.h b/src/isolate.h
index 2ea9b80b69c975046cf797106b7714469cc190cd..24d1bfb9576c55c1368469607f6423ba26f2afd0 100644
--- a/src/isolate.h
+++ b/src/isolate.h
@@ -116,6 +116,13 @@ typedef ZoneList<Handle<Object> > ZoneObjectList;
     return value;                                          \
   }
 
+#define CHECK_NOT_EMPTY_HANDLE(isolate, call)     \
+  do {                                            \
+    ASSERT(!(isolate)->has_pending_exception());  \
+    CHECK(!(call).is_null());                     \
+    CHECK(!(isolate)->has_pending_exception());   \
+  } while (false)
+
 #define RETURN_IF_EMPTY_HANDLE(isolate, call)                       \
   RETURN_IF_EMPTY_HANDLE_VALUE(isolate, call, Failure::Exception())