[builtins] Provide Math.floor as TurboFan builtin.

src/js/i18n.js

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // ECMAScript 402 API implementation.
 
 /**
  * Intl object is a single object that has some named properties,
  * all of which are constructors.
  */
@@ skipping 14 matching lines @@
 var IsFinite;
 var IsNaN;
 var GlobalBoolean = global.Boolean;
 var GlobalDate = global.Date;
 var GlobalNumber = global.Number;
 var GlobalRegExp = global.RegExp;
 var GlobalString = global.String;
 var MakeError;
 var MakeRangeError;
 var MakeTypeError;
-var MathFloor;
 var ObjectDefineProperties = utils.ImportNow("ObjectDefineProperties");
 var ObjectDefineProperty = utils.ImportNow("ObjectDefineProperty");
 var ObjectHasOwnProperty = utils.ImportNow("ObjectHasOwnProperty");
 var patternSymbol = utils.ImportNow("intl_pattern_symbol");
 var RegExpTest;
 var resolvedSymbol = utils.ImportNow("intl_resolved_symbol");
 var SetFunctionName = utils.SetFunctionName;
 var StringIndexOf;
 var StringLastIndexOf;
 var StringMatch;
 var StringReplace;
 var StringSplit;
 var StringSubstr;
 var StringSubstring;
 
 utils.Import(function(from) {
   ArrayIndexOf = from.ArrayIndexOf;
   ArrayJoin = from.ArrayJoin;
   ArrayPush = from.ArrayPush;
   IsFinite = from.IsFinite;
   IsNaN = from.IsNaN;
   MakeError = from.MakeError;
   MakeRangeError = from.MakeRangeError;
   MakeTypeError = from.MakeTypeError;
-  MathFloor = from.MathFloor;
   RegExpTest = from.RegExpTest;
   StringIndexOf = from.StringIndexOf;
   StringLastIndexOf = from.StringLastIndexOf;
   StringMatch = from.StringMatch;
   StringReplace = from.StringReplace;
   StringSplit = from.StringSplit;
   StringSubstr = from.StringSubstr;
   StringSubstring = from.StringSubstring;
 });
 
@@ skipping 1034 matching lines @@
  * Returns the valid digit count for a property, or throws RangeError on
  * a value out of the range.
  */
 function getNumberOption(options, property, min, max, fallback) {
   var value = options[property];
   if (!IS_UNDEFINED(value)) {
     value = GlobalNumber(value);
     if (IsNaN(value) || value < min || value > max) {
       throw MakeRangeError(kPropertyValueOutOfRange, property);
     }
-    return MathFloor(value);
+    return %math_floor(value);
   }
 
   return fallback;
 }
 
 var patternAccessor = {
   get() {
     %IncrementUseCounter(kIntlPattern);
     return this[patternSymbol];
   },
@@ skipping 1022 matching lines @@
     }
 
     var locales = arguments[0];
     var options = arguments[1];
     return toLocaleDateTime(
         this, locales, options, 'time', 'time', 'dateformattime');
   }
 );
 
 })