[stubs] Introduce ToNameStub to implement %_ToName.

src/full-codegen/arm64/full-codegen-arm64.cc

Index: src/full-codegen/arm64/full-codegen-arm64.cc
diff --git a/src/full-codegen/arm64/full-codegen-arm64.cc b/src/full-codegen/arm64/full-codegen-arm64.cc
index 7902358a6e1d1f2b52aa50a4295be403c2ea59ba..3ebd627b93d2aca976e81e5630a406df8c02d170 100644
--- a/src/full-codegen/arm64/full-codegen-arm64.cc
+++ b/src/full-codegen/arm64/full-codegen-arm64.cc
@@ -3247,25 +3247,6 @@ void FullCodeGenerator::EmitToInteger(CallRuntime* expr) {
 }
 
 
-void FullCodeGenerator::EmitToName(CallRuntime* expr) {
-  ZoneList<Expression*>* args = expr->arguments();
-  DCHECK_EQ(1, args->length());
-
-  // Load the argument into x0 and convert it.
-  VisitForAccumulatorValue(args->at(0));
-
-  Label convert, done_convert;
-  __ JumpIfSmi(x0, &convert);
-  STATIC_ASSERT(FIRST_NAME_TYPE == FIRST_TYPE);
-  __ JumpIfObjectType(x0, x1, x1, LAST_NAME_TYPE, &done_convert, ls);
-  __ Bind(&convert);
-  __ Push(x0);
-  __ CallRuntime(Runtime::kToName);
-  __ Bind(&done_convert);
-  context()->Plug(x0);
-}
-
-
 void FullCodeGenerator::EmitStringCharFromCode(CallRuntime* expr) {
   ZoneList<Expression*>* args = expr->arguments();
   DCHECK(args->length() == 1);