[turbofan] Stub for typeof operator.

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

Index: src/crankshaft/arm/lithium-codegen-arm.cc
diff --git a/src/crankshaft/arm/lithium-codegen-arm.cc b/src/crankshaft/arm/lithium-codegen-arm.cc
index 11b2f6dc28201e7f6d04bbca2abbb561cfa8a333..fbdec969d58540a4be09c53bc29d615e8fb00a18 100644
--- a/src/crankshaft/arm/lithium-codegen-arm.cc
+++ b/src/crankshaft/arm/lithium-codegen-arm.cc
@@ -5182,8 +5182,8 @@ void LCodeGen::DoTypeof(LTypeof* instr) {
   __ mov(r0, Operand(isolate()->factory()->number_string()));
   __ jmp(&end);
   __ bind(&do_call);
-  TypeofStub stub(isolate());
-  CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr);
+  Callable callable = CodeFactory::Typeof(isolate());
+  CallCode(callable.code(), RelocInfo::CODE_TARGET, instr);
   __ bind(&end);
 }