Fix for undefined reject() in extension_view_api_methods.js.

It looks like reject() is defined in extension_view.js. Perhaps this code was pulled from there at some point. In any case, it seems that this should just be a call to this.pendingLoad.reject().

BUG=642849

Review-Url: https://codereview.chromium.org/2298803004
Cr-Commit-Position: refs/heads/master@{#415745}

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

@@ -32,9 +32,9 @@ ExtensionViewImpl.prototype.load = function(src) {
     this.pendingLoad = null;
     this.loadNextSrc();
   }.bind(this), function onLoadRejected() {
+    this.pendingLoad.reject('Failed to load.');
     this.pendingLoad = null;
     this.loadNextSrc();
-    reject('Failed to load.');
   }.bind(this));
 };