[turbofan] Introduce Float64Pow and NumberPow operators.

src/code-factory.h

Index: src/code-factory.h
diff --git a/src/code-factory.h b/src/code-factory.h
index 7fb7bc531f0929872d551c870e7b2f83ec580cf9..fdb1ddd27287f8d31f515bce1437704aa4d7de68 100644
--- a/src/code-factory.h
+++ b/src/code-factory.h
@@ -146,8 +146,6 @@ class CodeFactory final {
   static Callable ConstructFunction(Isolate* isolate);
   static Callable HasProperty(Isolate* isolate);
 
-  static Callable MathPow(Isolate* isolate);
-
   static Callable InterpreterPushArgsAndCall(Isolate* isolate,
                                              TailCallMode tail_call_mode);
   static Callable InterpreterPushArgsAndConstruct(Isolate* isolate);