Revert of Amend DataView, ArrayBuffer, and TypedArray methods to use ToIndex.

src/js/runtime.js

Index: src/js/runtime.js
diff --git a/src/js/runtime.js b/src/js/runtime.js
index 4983d81df738f3a9754dd55efad580b2ae454d42..216685fe4f2692eba560e0be9aedd03a919b6c01 100644
--- a/src/js/runtime.js
+++ b/src/js/runtime.js
@@ -45,13 +45,6 @@ function ToPositiveInteger(x, rangeErrorIndex) {
 }
 
 
-function ToIndex(x, rangeErrorIndex) {
-  var i = TO_INTEGER(x) + 0;
-  if (i < 0 || i > kMaxSafeInteger) throw MakeRangeError(rangeErrorIndex);
-  return i;
-}
-
-
 function MaxSimple(a, b) {
   return a > b ? a : b;
 }
@@ -101,7 +94,6 @@ utils.Export(function(to) {
   to.MaxSimple = MaxSimple;
   to.MinSimple = MinSimple;
   to.ToPositiveInteger = ToPositiveInteger;
-  to.ToIndex = ToIndex;
   to.SpeciesConstructor = SpeciesConstructor;
 });