Replace SetObjectProperty / DefineObjectProperty with less powerful alternatives where relevant.

test/cctest/test-debug.cc

Index: test/cctest/test-debug.cc
diff --git a/test/cctest/test-debug.cc b/test/cctest/test-debug.cc
index 59b2bad9ca2037c3f1c78f2176836e2a5d2f4766..25a75103e3704e5f7938877b8d56fee2ea9b2ffc 100644
--- a/test/cctest/test-debug.cc
+++ b/test/cctest/test-debug.cc
@@ -115,8 +115,9 @@ class DebugLocalContext {
         v8::Utils::OpenHandle(*context_->Global())));
     Handle<v8::internal::String> debug_string =
         factory->InternalizeOneByteString(STATIC_CHAR_VECTOR("debug"));
-    v8::internal::Runtime::DefineObjectProperty(global, debug_string,
-        handle(debug_context->global_proxy(), isolate), DONT_ENUM).Check();
+    v8::internal::JSObject::SetOwnPropertyIgnoreAttributes(
+        global, debug_string, handle(debug_context->global_proxy()), DONT_ENUM)
+        .Check();
   }
 
  private: