Replace boolean indications of strict mode by an enum value.

src/arm/lithium-codegen-arm.cc

Index: src/arm/lithium-codegen-arm.cc
diff --git a/src/arm/lithium-codegen-arm.cc b/src/arm/lithium-codegen-arm.cc
index 026538254a6e8f106067cae6b02184d27d32079e..4cf7df4c78db93b5b778aa97a8010e7ab733a4a9 100644
--- a/src/arm/lithium-codegen-arm.cc
+++ b/src/arm/lithium-codegen-arm.cc
@@ -4416,8 +4416,7 @@ void LCodeGen::DoFunctionLiteral(LFunctionLiteral* instr) {
   Handle<SharedFunctionInfo> shared_info = instr->shared_info();
   bool pretenure = instr->hydrogen()->pretenure();
   if (!pretenure && shared_info->num_literals() == 0) {
-    FastNewClosureStub stub(
-        shared_info->strict_mode() ? kStrictMode : kNonStrictMode);
+    FastNewClosureStub stub(shared_info->strict_mode_flag());
     __ mov(r1, Operand(shared_info));
     __ push(r1);
     CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr);