Fix for GuestView exposure through shift().

extensions/renderer/resources/guest_view/extension_view/extension_view.js

Index: extensions/renderer/resources/guest_view/extension_view/extension_view.js
diff --git a/extensions/renderer/resources/guest_view/extension_view/extension_view.js b/extensions/renderer/resources/guest_view/extension_view/extension_view.js
index 967839e075d967caa787bd3e02f080a4490edf1f..f28bf6d17c18d12b4e12eba1dbdc169dd6c7fdd2 100644
--- a/extensions/renderer/resources/guest_view/extension_view/extension_view.js
+++ b/extensions/renderer/resources/guest_view/extension_view/extension_view.js
@@ -71,7 +71,7 @@ ExtensionViewImpl.prototype.loadNextSrc = function() {
   // If extensionview isn't currently loading a src, load the next src
   // in |loadQueue|. Otherwise, do nothing.
   if (!this.pendingLoad && this.loadQueue.length) {
-    this.pendingLoad = this.loadQueue.shift();
+    this.pendingLoad = $Array.shift(this.loadQueue);
     var src = this.pendingLoad.src;
     var resolve = this.pendingLoad.resolve;
     var reject = this.pendingLoad.reject;