[builtins] Migrate ToNumber to TurboFan.

src/interpreter/interpreter.cc

Index: src/interpreter/interpreter.cc
diff --git a/src/interpreter/interpreter.cc b/src/interpreter/interpreter.cc
index 69d7a90c9a3a69d4e955e5ab88567396703e36bf..7a38a63e128e025b18a30cc6e6a1cce18835b479 100644
--- a/src/interpreter/interpreter.cc
+++ b/src/interpreter/interpreter.cc
@@ -1314,7 +1314,9 @@ void Interpreter::DoToName(InterpreterAssembler* assembler) {
 //
 // Convert the object referenced by the accumulator to a number.
 void Interpreter::DoToNumber(InterpreterAssembler* assembler) {
-  Node* result = BuildUnaryOp(CodeFactory::ToNumber(isolate_), assembler);
+  Node* object = __ GetAccumulator();
+  Node* context = __ GetContext();
+  Node* result = __ ToNumber(context, object);
   __ StoreRegister(result, __ BytecodeOperandReg(0));
   __ Dispatch();
 }