Print Preview Componentization: Add field trial config

Bug: 773928
Change-Id: I4a9b62249ac7ac45a73fe2345e7a41bd41525d27
Reviewed-on: https://chromium-review.googlesource.com/1103305Reviewed-by: Demetrios Papadopoulos <dpapad@chromium.org>
Reviewed-by: Robert Kaplow <rkaplow@chromium.org>
Commit-Queue: Rebekah Potter <rbpotter@chromium.org>
Cr-Commit-Position: refs/heads/master@{#571023}

chrome/test/data/webui/print_preview/print_preview_destination_search_test.js

@@ -6,6 +6,8 @@ const ROOT_PATH = '../../../../../';
 
 GEN_INCLUDE(
     [ROOT_PATH + 'chrome/test/data/webui/polymer_browser_test_base.js']);
+GEN('#include "chrome/common/chrome_features.h"');
+GEN('#include "ui/base/ui_base_features.h"');
 
 /**
  * Test fixture for DestinationSearch of Print Preview.
@@ -23,6 +25,9 @@ PrintPreviewDestinationSearchTest.prototype = {
   /** @override */
   runAccessibilityChecks: false,
 
+  /** @override */
+  featureList: ['', 'features::kNewPrintPreview, features::kExperimentalUi'],
+
   /** @override */
   extraLibraries: PolymerTest.getLibraries(ROOT_PATH).concat([
     ROOT_PATH + 'chrome/test/data/webui/test_browser_proxy.js',

chrome/test/data/webui/print_preview/print_preview_ui_browsertest.js

@@ -6,6 +6,9 @@
 
 const ROOT_PATH = '../../../../../';
 
+GEN('#include "chrome/common/chrome_features.h"');
+GEN('#include "ui/base/ui_base_features.h"');
+
 /**
  * @constructor
  * @extends {testing.Test}
@@ -30,6 +33,9 @@ PrintPreviewUIBrowserTest.prototype = {
   /** @override */
   isAsync: true,
 
+  /** @override */
+  featureList: ['', 'features::kNewPrintPreview, features::kExperimentalUi'],
+
   /** @override */
   preLoad: function() {
     window.isTest = true;

testing/variations/fieldtrial_testing_config.json

@@ -2389,6 +2389,24 @@
             ]
         }
     ],
+    "NewPrintPreview": [
+        {
+            "platforms": [
+                "chromeos",
+                "linux",
+                "mac",
+                "win"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "NewPrintPreview"
+                    ]
+                }
+            ]
+        }
+    ],
     "NewTabInProductHelp": [
         {
             "platforms": [