Revert "Apply numeric casts correctly in typed arrays and related code."

src/arraybuffer.js

Index: src/arraybuffer.js
diff --git a/src/arraybuffer.js b/src/arraybuffer.js
index d5fd9adbad887183eba334a415c97ddf8af13414..cfaa8d7efca4689b9b715cd3fb34212d6e35346e 100644
--- a/src/arraybuffer.js
+++ b/src/arraybuffer.js
@@ -56,9 +56,6 @@ function ArrayBufferSlice(start, end) {
   }
 
   var relativeStart = TO_INTEGER(start);
-  if (!IS_UNDEFINED(end)) {
-    end = TO_INTEGER(end);
-  }
   var first;
   var byte_length = %ArrayBufferGetByteLength(this);
   if (relativeStart < 0) {
@@ -66,7 +63,7 @@ function ArrayBufferSlice(start, end) {
   } else {
     first = MathMin(relativeStart, byte_length);
   }
-  var relativeEnd = IS_UNDEFINED(end) ? byte_length : end;
+  var relativeEnd = IS_UNDEFINED(end) ? byte_length : TO_INTEGER(end);
   var fin;
   if (relativeEnd < 0) {
     fin = MathMax(byte_length + relativeEnd, 0);