Call IsStringLiteral instead of IsPropertyName in VisitObjectLiteral.

src/crankshaft/hydrogen.cc

Index: src/crankshaft/hydrogen.cc
diff --git a/src/crankshaft/hydrogen.cc b/src/crankshaft/hydrogen.cc
index e0e9100828f4a02135d8d9916e9ce388084e8b50..3675dde86127098ead0c274815e3dc1e126b5a7c 100644
--- a/src/crankshaft/hydrogen.cc
+++ b/src/crankshaft/hydrogen.cc
@@ -5932,7 +5932,8 @@ void HOptimizedGraphBuilder::VisitObjectLiteral(ObjectLiteral* expr) {
       case ObjectLiteral::Property::COMPUTED:
         // It is safe to use [[Put]] here because the boilerplate already
         // contains computed properties with an uninitialized value.
-        if (key->IsPropertyName()) {
+        if (key->IsStringLiteral()) {
+          DCHECK(key->IsPropertyName());
           if (property->emit_store()) {
             CHECK_ALIVE(VisitForValue(value));
             HValue* value = Pop();