Print Preview: Adding UI for margin settings.

chrome/test/data/webui/print_preview.js

 // Copyright (c) 2011 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.
 
 /**
  * Test fixture for print preview WebUI testing.
  * @extends {testing.Test}
  * @constructor
  */
 function PrintPreviewWebUITest() {}
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         'src',
         'chrome://print/' + previewUid + '/' + srcDataIndex + '/print.pdf');
     pdfViewer.setAttribute('aria-live', 'polite');
     pdfViewer.setAttribute('aria-atomic', 'true');
     function fakeFunction() {}
     pdfViewer.onload = fakeFunction;
     pdfViewer.goToPage = fakeFunction;
     pdfViewer.removePrintButton = fakeFunction;
     pdfViewer.fitToHeight = fakeFunction;
     pdfViewer.grayscale = fakeFunction;
+    pdfViewer.getZoomLevel = fakeFunction;
+    pdfViewer.setZoomLevel = fakeFunction;
+    pdfViewer.pageXOffset = fakeFunction;
+    pdfViewer.pageYOffset = fakeFunction;
+    pdfViewer.setPageXOffset = fakeFunction;
+    pdfViewer.setPageYOffset = fakeFunction;
+    pdfViewer.getHeight = fakeFunction;
+    pdfViewer.getWidth = fakeFunction;
+    pdfViewer.getPageLocationNormalized = fakeFunction;
+    pdfViewer.onScroll = fakeFunction;
+    pdfViewer.onPluginSizeChanged = fakeFunction;
+    pdfViewer.getHorizontalScrollbarThickness = fakeFunction;
+    pdfViewer.getVerticalScrollbarThickness = fakeFunction;
     $('mainview').appendChild(pdfViewer);
     onPDFLoad();
   },
 
   /**
    * Always return true so tests run on systems without plugin available.
    * @return {boolean} Always true.
    */
   checkCompatiblePluginExists: function() {
     return true;
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 // Test that error message is displayed when plugin doesn't exist.
 TEST_F('PrintPreviewNoPDFWebUITest', 'TestErrorMessage', function() {
   var errorButton = $('error-button');
   assertNotEquals(null, errorButton);
   expectFalse(errorButton.disabled);
   var errorText = $('custom-message');
   assertNotEquals(null, errorText);
   expectFalse(errorText.classList.contains('hidden'));
 });