Merge V8 5.3.332.45.  DO NOT MERGE

Test: Manual

FPIIM-449

Change-Id: Id3254828b068abdea3cb10442e0172a8c9a98e03
(cherry picked from commit 13e2dadd00298019ed862f2b2fc5068bba730bcf)
diff --git a/test/unittests/compiler/escape-analysis-unittest.cc b/test/unittests/compiler/escape-analysis-unittest.cc
index 4c17ef2..9b584a2 100644
--- a/test/unittests/compiler/escape-analysis-unittest.cc
+++ b/test/unittests/compiler/escape-analysis-unittest.cc
@@ -48,7 +48,8 @@
       effect = effect_;
     }
 
-    return effect_ = graph()->NewNode(common()->BeginRegion(), effect);
+    return effect_ = graph()->NewNode(
+               common()->BeginRegion(RegionObservability::kObservable), effect);
   }
 
   Node* FinishRegion(Node* value, Node* effect = nullptr) {