[builtins] Migrate ToNumber to TurboFan.

src/builtins/arm/builtins-arm.cc

Index: src/builtins/arm/builtins-arm.cc
diff --git a/src/builtins/arm/builtins-arm.cc b/src/builtins/arm/builtins-arm.cc
index d3ed62ac1b53adec3a99046e61b1f10720db0b52..49d2e9120b17151b8cf6e17c88c17859fd9798f0 100644
--- a/src/builtins/arm/builtins-arm.cc
+++ b/src/builtins/arm/builtins-arm.cc
@@ -2836,21 +2836,6 @@ void Builtins::Generate_Abort(MacroAssembler* masm) {
   __ TailCallRuntime(Runtime::kAbort);
 }
 
-void Builtins::Generate_ToNumber(MacroAssembler* masm) {
-  // The ToNumber stub takes one argument in r0.
-  STATIC_ASSERT(kSmiTag == 0);
-  __ tst(r0, Operand(kSmiTagMask));
-  __ Ret(eq);
-
-  __ CompareObjectType(r0, r1, r1, HEAP_NUMBER_TYPE);
-  // r0: receiver
-  // r1: receiver instance type
-  __ Ret(eq);
-
-  __ Jump(masm->isolate()->builtins()->NonNumberToNumber(),
-          RelocInfo::CODE_TARGET);
-}
-
 void Builtins::Generate_ArgumentsAdaptorTrampoline(MacroAssembler* masm) {
   // ----------- S t a t e -------------
   //  -- r0 : actual number of arguments