Handlify LookupSingleCharacterStringFromCode.

src/hydrogen-instructions.cc

Index: src/hydrogen-instructions.cc
diff --git a/src/hydrogen-instructions.cc b/src/hydrogen-instructions.cc
index b54656c075c781e315237be83fff4af27efbb4c9..4f728c6f7b0af1b6629e2571218cd755fac517b6 100644
--- a/src/hydrogen-instructions.cc
+++ b/src/hydrogen-instructions.cc
@@ -4097,7 +4097,7 @@ HInstruction* HStringCharFromCode::New(
       if (std::isfinite(c_code->DoubleValue())) {
         uint32_t code = c_code->NumberValueAsInteger32() & 0xffff;
         return HConstant::New(zone, context,
-            LookupSingleCharacterStringFromCode(isolate, code));
+            isolate->factory()->LookupSingleCharacterStringFromCode(code));
       }
       return HConstant::New(zone, context, isolate->factory()->empty_string());
     }