Check for RPCS printers and return error if Win8+

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

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @typedef {{accessibility: Function,
  *            documentLoadComplete: Function,
  *            getHeight: Function,
  *            getHorizontalScrollbarThickness: Function,
  *            getPageLocationNormalized: Function,
@@ skipping 584 matching lines @@
      * Called when the preview generation is complete and the document is ready
      * to print.
      * @private
      */
     onDocumentReady_: function(event) {
       this.isDocumentReady_ = true;
       this.dispatchPreviewGenerationDoneIfReady_();
     },
 
     /**
+     * Cancels the timeout so that an error message can be shown.
+     */
+    cancelTimeout: function() {
+      if (this.loadingTimeout_) {
+        clearTimeout(this.loadingTimeout_);
+        this.loadingTimeout_ = null;
+      }
+    },
+
+    /**
      * Called when the generation of a preview fails. Shows an error message.
      * @private
      */
     onPreviewGenerationFail_: function() {
-      if (this.loadingTimeout_) {
-        clearTimeout(this.loadingTimeout_);
-        this.loadingTimeout_ = null;
-      }
+      this.cancelTimeout();
       this.showMessage_(PreviewArea.MessageId_.PREVIEW_FAILED);
       cr.dispatchSimpleEvent(
           this, PreviewArea.EventType.PREVIEW_GENERATION_FAIL);
     },
 
     /**
      * Called when the plugin loads. This is a consequence of calling
      * plugin.reload(). Certain plugin state can only be set after the plugin
      * has loaded.
      * @private
      */
     onPluginLoad_: function() {
-      if (this.loadingTimeout_) {
-        clearTimeout(this.loadingTimeout_);
-        this.loadingTimeout_ = null;
-      }
-
+      this.cancelTimeout();
       this.setOverlayVisible_(false);
       this.isPluginReloaded_ = true;
       this.dispatchPreviewGenerationDoneIfReady_();
     },
 
     /**
      * Called when the preview plugin's visual state has changed. This is a
      * consequence of scrolling or zooming the plugin. Updates the custom
      * margins component if shown.
      * @private
@@ skipping 26 matching lines @@
       // being draggable.
       this.plugin_.style.pointerEvents = isDragging ? 'none' : 'auto';
     }
   };
 
   // Export
   return {
     PreviewArea: PreviewArea
   };
 });