Bump to v4.3.0.

_cloneArrayBuffer.js

@@ -0,0 +1,20 @@
+define(['./_Uint8Array'], function(Uint8Array) {
+
+  /**
+   * Creates a clone of `arrayBuffer`.
+   *
+   * @private
+   * @param {ArrayBuffer} arrayBuffer The array buffer to clone.
+   * @returns {ArrayBuffer} Returns the cloned array buffer.
+   */
+  function cloneArrayBuffer(arrayBuffer) {
+    var Ctor = arrayBuffer.constructor,
+        result = new Ctor(arrayBuffer.byteLength),
+        view = new Uint8Array(result);
+
+    view.set(new Uint8Array(arrayBuffer));
+    return result;
+  }
+
+  return cloneArrayBuffer;
+});