Handle null or empty page normalized string.

BUG=133766


Review URL: https://chromiumcodereview.appspot.com/10823173

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@150017 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/resources/print_preview/previewarea/preview_area.js

@@ -567,7 +567,11 @@ cr.define('print_preview', function() {
         this.pageOffset_ = new print_preview.Coordinate2d(
             this.plugin_.pageXOffset(), this.plugin_.pageYOffset());
       }
-      var normalized = this.plugin_.getPageLocationNormalized().split(';');
+      var pageLocationNormalizedStr = this.plugin_.getPageLocationNormalized();
+      if (!pageLocationNormalizedStr) {
+        return;
+      }
+      var normalized = pageLocationNormalizedStr.split(';');
       var pluginWidth = this.plugin_.getWidth();
       var pluginHeight = this.plugin_.getHeight();
       var translationTransform = new print_preview.Coordinate2d(