Add ArrayBuffer.slice polyfill for Android pre-KK

www/cdvah/harnessmenu.html

@@ -22,6 +22,7 @@
         <meta name="viewport" content="width=device-width, user-scalable=no">
         <script>THIS_IS_APP_HARNESS=true</script>
         <script type="text/javascript" src="../cordova.js"></script>
+        <script type="text/javascript" src="js/polyfill/slice.js"></script>
         <script type="text/javascript" src="js/libs/angular.js"></script>
         <script type="text/javascript" src="js/libs/angular-route.js"></script>
         <script type="text/javascript" src="js/libs/moment.min.js"></script>

www/cdvah/js/polyfill/slice.js

@@ -0,0 +1,42 @@
+// https://github.com/ttaubert/node-arraybuffer-slice
+// (c) 2014 Tim Taubert <tim@timtaubert.de>
+// arraybuffer-slice may be freely distributed under the MIT license.
+
+(function (undefined) {
+  "use strict";
+
+  function clamp(val, length) {
+    val = (val|0) || 0;
+
+    if (val < 0) {
+      return Math.max(val + length, 0);
+    }
+
+    return Math.min(val, length);
+  }
+
+  if (!ArrayBuffer.prototype.slice) {
+    ArrayBuffer.prototype.slice = function (from, to) {
+      var length = this.byteLength;
+      var begin = clamp(from, length);
+      var end = length;
+
+      if (to !== undefined) {
+        end = clamp(to, length);
+      }
+
+      if (begin > end) {
+        return new ArrayBuffer(0);
+      }
+
+      var num = end - begin;
+      var target = new ArrayBuffer(num);
+      var targetArray = new Uint8Array(target);
+
+      var sourceArray = new Uint8Array(this, begin, num);
+      targetArray.set(sourceArray);
+
+      return target;
+    };
+  }
+})();