Generalize printer color model handling, get rid of CUPS specific case. Enable supported paper szes…

chrome/browser/resources/print_preview/native_layer.js

Index: chrome/browser/resources/print_preview/native_layer.js
diff --git a/chrome/browser/resources/print_preview/native_layer.js b/chrome/browser/resources/print_preview/native_layer.js
index efdd55b36073695ca5a34c475a299e408e7ea0a9..0111ccd3b778b70283e398e87278bba04bd2e35d 100644
--- a/chrome/browser/resources/print_preview/native_layer.js
+++ b/chrome/browser/resources/print_preview/native_layer.js
@@ -168,6 +168,23 @@ cr.define('print_preview', function() {
     },
 
     /**
+     * @param {!print_preview.Destination} destination Destination to print to.
+     * @param {!print_preview.ticket_items.Color} color Color ticket item.
+     * @return {number} Native layer color model.
+     * @private
+     */
+    getNativeColorModel_: function(destination, color) {
+      // For non-local printers native color model is ignored anyway.
+      var option = destination.isLocal ? color.getSelectedOption() : null;
+      var nativeColorModel = parseInt(option ? option.vendor_id : null);
+      if (isNaN(nativeColorModel)) {
+        return color.getValue() ?
+            NativeLayer.ColorMode_.COLOR : NativeLayer.ColorMode_.GRAY;
+      }
+      return nativeColorModel;
+    },
+
+    /**
      * Requests that a preview be generated. The following events may be
      * dispatched in response:
      *   - PAGE_COUNT_READY
@@ -190,8 +207,7 @@ cr.define('print_preview', function() {
         'pageRange': printTicketStore.pageRange.getDocumentPageRanges(),
         'mediaSize': printTicketStore.mediaSize.getValue(),
         'landscape': printTicketStore.landscape.getValue(),
-        'color': printTicketStore.color.getValue() ?
-            NativeLayer.ColorMode_.COLOR : NativeLayer.ColorMode_.GRAY,
+        'color': this.getNativeColorModel_(destination, printTicketStore.color),
         'headerFooterEnabled': printTicketStore.headerFooter.getValue(),
         'marginsType': printTicketStore.marginsType.getValue(),
         'isFirstRequest': requestId == 0,
@@ -263,8 +279,7 @@ cr.define('print_preview', function() {
         'pageRange': printTicketStore.pageRange.getDocumentPageRanges(),
         'pageCount': printTicketStore.pageRange.getPageNumberSet().size,
         'landscape': printTicketStore.landscape.getValue(),
-        'color': printTicketStore.color.getValue() ?
-            NativeLayer.ColorMode_.COLOR : NativeLayer.ColorMode_.GRAY,
+        'color': this.getNativeColorModel_(destination, printTicketStore.color),
         'headerFooterEnabled': printTicketStore.headerFooter.getValue(),
         'marginsType': printTicketStore.marginsType.getValue(),
         'generateDraftData': true, // TODO(rltoscano): What should this be?