[for-in] Further refactorings and unification around for-in.

src/crankshaft/arm64/lithium-codegen-arm64.cc

Index: src/crankshaft/arm64/lithium-codegen-arm64.cc
diff --git a/src/crankshaft/arm64/lithium-codegen-arm64.cc b/src/crankshaft/arm64/lithium-codegen-arm64.cc
index c938dac9a875ed7998433a35867d03acf9f90839..2d24f9d96054b323f03c4cad9c8427de5404c2b9 100644
--- a/src/crankshaft/arm64/lithium-codegen-arm64.cc
+++ b/src/crankshaft/arm64/lithium-codegen-arm64.cc
@@ -2729,7 +2729,7 @@ void LCodeGen::DoForInPrepareMap(LForInPrepareMap* instr) {
   // Get the set of properties to enumerate.
   __ Bind(&call_runtime);
   __ Push(object);
-  CallRuntime(Runtime::kGetPropertyNamesFast, instr);
+  CallRuntime(Runtime::kForInEnumerate, instr);
   __ Bind(&use_cache);
 }