[builtins] Add support for JS builtins written in TurboFan.

src/js/math.js

Index: src/js/math.js
diff --git a/src/js/math.js b/src/js/math.js
index 69afaaba823dd633ebed027b18d6962b184dd563..c17441db8064ec48c7f308a6e665060eb31acc90 100644
--- a/src/js/math.js
+++ b/src/js/math.js
@@ -91,11 +91,6 @@ function MathRound(x) {
   return %RoundNumber(TO_NUMBER(x));
 }
 
-// ECMA 262 - 15.8.2.17
-function MathSqrtJS(x) {
-  return %_MathSqrt(+x);
-}
-
 // ES6 draft 09-27-13, section 20.2.2.28.
 function MathSign(x) {
   x = +x;
@@ -119,9 +114,9 @@ function MathAsinh(x) {
   x = TO_NUMBER(x);
   // Idempotent for NaN, +/-0 and +/-Infinity.
   if (x === 0 || !NUMBER_IS_FINITE(x)) return x;
-  if (x > 0) return MathLog(x + %_MathSqrt(x * x + 1));
+  if (x > 0) return MathLog(x + %math_sqrt(x * x + 1));
   // This is to prevent numerical errors caused by large negative x.
-  return -MathLog(-x + %_MathSqrt(x * x + 1));
+  return -MathLog(-x + %math_sqrt(x * x + 1));
 }
 
 // ES6 draft 09-27-13, section 20.2.2.3.
@@ -130,7 +125,7 @@ function MathAcosh(x) {
   if (x < 1) return NaN;
   // Idempotent for NaN and +Infinity.
   if (!NUMBER_IS_FINITE(x)) return x;
-  return MathLog(x + %_MathSqrt(x + 1) * %_MathSqrt(x - 1));
+  return MathLog(x + %math_sqrt(x + 1) * %math_sqrt(x - 1));
 }
 
 // ES6 draft 09-27-13, section 20.2.2.7.
@@ -169,7 +164,7 @@ function MathHypot(x, y) {  // Function length is 2.
     compensation = (preliminary - sum) - summand;
     sum = preliminary;
   }
-  return %_MathSqrt(sum) * max;
+  return %math_sqrt(sum) * max;
 }
 
 // ES6 draft 07-18-14, section 20.2.2.11
@@ -234,7 +229,6 @@ utils.InstallFunctions(GlobalMath, DONT_ENUM, [
   "floor", MathFloorJS,
   "log", MathLog,
   "round", MathRound,
-  "sqrt", MathSqrtJS,
   "atan2", MathAtan2JS,
   "pow", MathPowJS,
   "sign", MathSign,
@@ -254,7 +248,6 @@ utils.InstallFunctions(GlobalMath, DONT_ENUM, [
 %SetForceInlineFlag(MathFloorJS);
 %SetForceInlineFlag(MathRandom);
 %SetForceInlineFlag(MathSign);
-%SetForceInlineFlag(MathSqrtJS);
 %SetForceInlineFlag(MathTrunc);
 
 // -------------------------------------------------------------------