Multidevice: Fix failing MultiDeviceSetupBrowserTest.* for Polymer 2.

Removes /deep/ usage, which no longer works in Shadow DOM v1. Also fixes
some test timing that caused part of the failures.

Bug: 875505,860069
Change-Id: I5642105a6df148bdea2d02b8e1af8889f400c89d
Reviewed-on: https://chromium-review.googlesource.com/1217026Reviewed-by: Kyle Horimoto <khorimoto@chromium.org>
Commit-Queue: Demetrios Papadopoulos <dpapad@chromium.org>
Cr-Commit-Position: refs/heads/master@{#590171}

chrome/test/data/webui/multidevice_setup/integration_test.js

@@ -34,10 +34,9 @@ cr.define('multidevice_setup', () => {
         multiDeviceSetupElement.uiMode = multidevice_setup.UiMode.POST_OOBE;
 
         document.body.appendChild(multiDeviceSetupElement);
-        forwardButton =
-            multiDeviceSetupElement.$$('button-bar /deep/ #forward');
+        forwardButton = multiDeviceSetupElement.$$('button-bar').$$('#forward');
         backwardButton =
-            multiDeviceSetupElement.$$('button-bar /deep/ #backward');
+            multiDeviceSetupElement.$$('button-bar').$$('#backward');
       });
 
       /** @param {string} visiblePageName */
@@ -51,7 +50,10 @@ cr.define('multidevice_setup', () => {
       test('SetupSucceededPage forward button closes UI', done => {
         setVisiblePage(SUCCESS);
         multiDeviceSetupElement.addEventListener('setup-exited', () => done());
-        forwardButton.click();
+
+        multiDeviceSetupElement.async(() => {
+          forwardButton.click();
+        });
       });
 
       // From StartSetupPage
@@ -85,7 +87,9 @@ cr.define('multidevice_setup', () => {
                 true;
             multiDeviceSetupElement.uiMode = multidevice_setup.UiMode.OOBE;
 
-            forwardButton.click();
+            multiDeviceSetupElement.async(() => {
+              forwardButton.click();
+            });
           });
 
       // Post-OOBE
@@ -125,7 +129,9 @@ cr.define('multidevice_setup', () => {
                 true;
             multiDeviceSetupElement.uiMode = multidevice_setup.UiMode.POST_OOBE;
 
-            forwardButton.click();
+            multiDeviceSetupElement.async(() => {
+              forwardButton.click();
+            });
           });
     });
   }

chrome/test/data/webui/multidevice_setup/start_setup_page_test.js

@@ -47,7 +47,7 @@ cr.define('multidevice_setup', () => {
 
       let selectOptionByTextContent = function(optionText) {
         const optionNodeList =
-            startSetupPageElement.querySelectorAll('* /deep/ option');
+            startSetupPageElement.$.deviceDropdown.querySelectorAll('option');
         for (option of optionNodeList.values()) {
           if (option.textContent.trim() == optionText) {
             MockInteractions.tap(option);
@@ -60,7 +60,8 @@ cr.define('multidevice_setup', () => {
           'Finding devices populates dropdown and defines selected device',
           () => {
             assertEquals(
-                startSetupPageElement.querySelectorAll('* /deep/ option')
+                startSetupPageElement.$.deviceDropdown
+                    .querySelectorAll('option')
                     .length,
                 DEVICES.length);
             assertEquals(startSetupPageElement.selectedDeviceId, 'abcdxl');

testing/buildbot/filters/webui_polymer2_browser_tests.filter

@@ -90,8 +90,6 @@
 -DemoSetupTest.OnlineSetupFlowSuccess
 -DemoSetupTest.ShowOfflineSetupOptionOnNetworkList
 -EulaTest.LoadOffline
--MultiDeviceSetupBrowserTest.Integration
--MultiDeviceSetupBrowserTest.StartSetupPage
 -OpenAudioFiles/FilesAppBrowserTest.Test/audioOpenDownloads
 -OpenAudioFiles/FilesAppBrowserTest.Test/audioOpenDownloads_GuestMode
 -OpenAudioFiles/FilesAppBrowserTest.Test/audioOpenDrive
@@ -296,8 +294,7 @@ MediaRouterElementsBrowserTest.MediaRouterHeader
 Mock4JSWebUITest.*
 Mock4JSWebUITest.*
 Mock4JSWebUITestFails.*
-MultiDeviceSetupBrowserTest.Integration
-MultiDeviceSetupBrowserTest.SetupSucceededPage
+MultiDeviceSetupBrowserTest.*
 MultiProfileDriveFileSystemExtensionApiTest.*
 MultiProfileFilesAppBrowserTest.*
 NetInternalsTest.*