PrintPreview: Fix printer color settings issues based on printer ppd/schema information.

chrome/browser/resources/print_preview/print_preview.js

Index: chrome/browser/resources/print_preview/print_preview.js
diff --git a/chrome/browser/resources/print_preview/print_preview.js b/chrome/browser/resources/print_preview/print_preview.js
index ad9ba00aa872fa5771856dc1421f00f9a8ed9681..98e6ed30da8a62973b4f558bb829d2b416f3018d 100644
--- a/chrome/browser/resources/print_preview/print_preview.js
+++ b/chrome/browser/resources/print_preview/print_preview.js
@@ -242,7 +242,7 @@ function updateControlsWithSelectedPrinterCapabilities() {
         'disableColorOption': true,
         'setColorAsDefault': true,
         'setDuplexAsDefault': false,
-        'printerColorModelForColor': colorSettings.COLOR,
+        'printerColorModelForColor': print_preview.ColorSettings.COLOR,
         'printerDefaultDuplexValue': copiesSettings.UNKNOWN_DUPLEX_MODE,
         'disableCopiesOption': true});
   } else {
@@ -956,7 +956,8 @@ function createPDFPlugin(srcDataIndex) {
     pdfViewer.goToPage('0');
     pdfViewer.resetPrintPreviewUrl(srcURL);
     pdfViewer.reload();
-    pdfViewer.grayscale(colorSettings.colorMode == colorSettings.GRAY);
+    pdfViewer.grayscale(
+        colorSettings.colorMode == print_preview.ColorSettings.GRAY);
     return;
   }