Print Preview: Add option to rasterize PDFs and add JPEG compression.

chrome/test/data/webui/print_preview.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.
 
 GEN('#include "base/feature_list.h"');
 GEN('#include "chrome/common/chrome_features.h"');
 
 /**
  * Test fixture for print preview WebUI testing.
  * @constructor
@@ skipping 43 matching lines @@
   /** @override */
   accessibilityIssuesAreErrors: true,
 
   /** @override */
   isAsync: true,
 
   /**
    * @override
    */
   testGenPreamble: function() {
-    // Enable print scaling for tests.
+    // Enable print scaling and print as image for tests.
     GEN('  base::FeatureList::ClearInstanceForTesting();');
     GEN('  std::unique_ptr<base::FeatureList>');
     GEN('      feature_list(new base::FeatureList);');
+    GEN('  char enabled_features[128] = {0};');
+    GEN('  strcpy(enabled_features, features::kPrintScaling.name);');
+    GEN('  strcat(strcat(enabled_features, ","), ');
+    GEN('      features::kPrintPdfAsImage.name);');
     GEN('  feature_list->InitializeFromCommandLine(');
-    GEN('      features::kPrintScaling.name, std::string());');
+    GEN('      enabled_features, std::string());');
     GEN('  base::FeatureList::SetInstance(std::move(feature_list));');
   },
 
   /**
    * Stub out low-level functionality like the NativeLayer and
    * CloudPrintInterface.
    * @this {PrintPreviewWebUITest}
    * @override
    */
   preLoad: function() {
@@ skipping 432 matching lines @@
               is_default: true
             }
           ]
         }
       }
     }
   };
   this.setCapabilities(device);
 
   var otherOptions = $('other-options-settings');
-  checkSectionVisible(otherOptions, false);
+  checkSectionVisible(otherOptions, true);
+  checkElementDisplayed(
+      otherOptions.querySelector('#fit-to-page-container'), false);
+  checkElementDisplayed(
+      otherOptions.querySelector('#rasterize-container'), true);
   checkSectionVisible($('media-size-settings'), false);
   checkSectionVisible($('scaling-settings'), false);
 
   testDone();
 });
 
 // When the source is 'HTML', we always hide the fit to page option and show
 // media size option.
 TEST_F('PrintPreviewWebUITest', 'SourceIsHTMLCapabilities', function() {
   this.setInitialSettings();
   this.setLocalDestinations();
   this.setCapabilities(getCddTemplate("FooDevice"));
 
   var otherOptions = $('other-options-settings');
   var fitToPage = otherOptions.querySelector('#fit-to-page-container');
+  var rasterize = otherOptions.querySelector('#rasterize-container');
   var mediaSize = $('media-size-settings');
   var scalingSettings = $('scaling-settings');
 
   // Check that options are collapsed (section is visible, because duplex is
   // available).
   checkSectionVisible(otherOptions, true);
   checkElementDisplayed(fitToPage, false);
+  checkElementDisplayed(rasterize, false);
   checkSectionVisible(mediaSize, false);
   checkSectionVisible(scalingSettings, false);
 
   this.expandMoreSettings();
 
   checkElementDisplayed(fitToPage, false);
+  checkElementDisplayed(rasterize, false);
   checkSectionVisible(mediaSize, true);
   checkSectionVisible(scalingSettings, true);
 
   this.waitForAnimationToEnd('more-settings');
 });
 
 // When the source is "PDF", depending on the selected destination printer, we
 // show/hide the fit to page option and hide media size selection.
 TEST_F('PrintPreviewWebUITest', 'SourceIsPDFCapabilities', function() {
   this.initialSettings_.isDocumentModifiable_ = false;
   this.setInitialSettings();
   this.setLocalDestinations();
   this.setCapabilities(getCddTemplate("FooDevice"));
 
   var otherOptions = $('other-options-settings');
   var scalingSettings = $('scaling-settings');
   var fitToPageContainer =
       otherOptions.querySelector('#fit-to-page-container');
+  var rasterizeContainer =
+      otherOptions.querySelector('#rasterize-container');
 
   checkSectionVisible(otherOptions, true);
   checkElementDisplayed(fitToPageContainer, true);
+  checkElementDisplayed(rasterizeContainer, false);
   expectTrue(
       fitToPageContainer.querySelector('.checkbox').checked);
   this.expandMoreSettings();
+  checkElementDisplayed(rasterizeContainer, true);
+  expectFalse(
+      rasterizeContainer.querySelector('.checkbox').checked);
   checkSectionVisible($('media-size-settings'), true);
   checkSectionVisible(scalingSettings, true);
 
   this.waitForAnimationToEnd('other-options-collapsible');
 });
 
 // When the source is "PDF", depending on the selected destination printer, we
 // show/hide the fit to page option and hide media size selection.
 TEST_F('PrintPreviewWebUITest', 'ScalingUnchecksFitToPage', function() {
   this.initialSettings_.isDocumentModifiable_ = false;
@@ skipping 626 matching lines @@
   // appears.
   var advancedSettingsCloseButton = $('advanced-settings').
       querySelector('.close-button');
   checkElementDisplayed(advancedSettingsCloseButton, true);
   checkElementDisplayed($('advanced-settings').
       querySelector('.search-box-area'), true);
 
   this.waitForAnimationToEnd('more-settings');
 });