Convert suggest_app_dialog.js to use async-await.

Bug: 909056
Change-Id: I526a3f743c2c458caad3f3dbaf899d9ef6e64518
Reviewed-on: https://chromium-review.googlesource.com/c/1354748
Commit-Queue: Sam McNally <sammc@chromium.org>
Reviewed-by: Noel Gordon <noel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#612110}

ui/file_manager/integration_tests/file_manager/suggest_app_dialog.js

@@ -7,107 +7,68 @@
 /**
  * Tests sharing a file on Drive
  */
-testcase.suggestAppDialog = function() {
-  var appId;
-  StepsRunner.run([
-    // Set up File Manager.
-    function() {
-      sendTestMessage({name: 'getCwsWidgetContainerMockUrl'}).then(this.next);
-    },
-    // Override the container URL with the mock.
-    function(json) {
-      var data = JSON.parse(json);
+testcase.suggestAppDialog = async function() {
+  // Fetch the mock CWS page data.
+  const data =
+      JSON.parse(await sendTestMessage({name: 'getCwsWidgetContainerMockUrl'}));
 
+  // Override the container URL with the mock.
   var appState = {
     suggestAppsDialogState: {
       overrideCwsContainerUrlForTest: data.url,
       overrideCwsContainerOriginForTest: data.origin
     }
   };
-      setupAndWaitUntilReady(appState, RootPath.DRIVE, this.next);
-    },
-    function(results) {
-      appId = results.windowId;
 
-      remoteCall.callRemoteTestUtil(
-          'selectFile', appId, ['unsupported.foo'], this.next);
-    },
+  // Set up File Manager.
+  const {appId} = await setupAndWaitUntilReady(appState, RootPath.DRIVE);
+
+  // Select a file.
+  chrome.test.assertTrue(await remoteCall.callRemoteTestUtil(
+      'selectFile', appId, ['unsupported.foo']));
+
   // Double-click the file.
-    function(result) {
-      chrome.test.assertTrue(result);
-      remoteCall.callRemoteTestUtil(
-          'fakeMouseDoubleClick',
-          appId,
-          ['#file-list li.table-row[selected] .filename-label span'],
-          this.next);
-    },
-    // Wait for the widget is loaded.
-    function(result) {
-      chrome.test.assertTrue(result);
-      remoteCall.waitForElement(appId, '#suggest-app-dialog webview[src]').
-          then(this.next);
-    },
-    // Wait for the widget is initialized.
-    function(result) {
-      chrome.test.assertTrue(!!result);
-      remoteCall.waitForElement(
-          appId, '.cws-widget-spinner-layer:not(.cws-widget-show-spinner)').
-          then(this.next);
-    },
+  chrome.test.assertTrue(await remoteCall.callRemoteTestUtil(
+      'fakeMouseDoubleClick', appId,
+      ['#file-list li.table-row[selected] .filename-label span']));
+
+  // Wait until the widget is loaded.
+  chrome.test.assertTrue(!!await remoteCall.waitForElement(
+      appId, '#suggest-app-dialog webview[src]'));
+
+  // Wait until the widget is initialized.
+  chrome.test.assertTrue(!!await remoteCall.waitForElement(
+      appId, '.cws-widget-spinner-layer:not(.cws-widget-show-spinner)'));
+
   // Override task APIs for test.
-    function(result) {
-      chrome.test.assertTrue(!!result);
-      remoteCall.callRemoteTestUtil(
-          'overrideTasks',
-          appId,
-          [[
-            {
+  chrome.test.assertTrue(!!await remoteCall.callRemoteTestUtil(
+      'overrideTasks', appId, [[{
         driveApp: false,
         iconUrl: 'chrome://theme/IDR_DEFAULT_FAVICON',  // Dummy icon
         isDefault: true,
         taskId: 'dummytaskid|drive|open-with',
         title: 'The dummy task for test'
-            }
-          ]],
-          this.next);
-    },
+      }]]));
+
   // Override installWebstoreItem API for test.
-    function(result) {
-      chrome.test.assertTrue(!!result);
-      remoteCall.callRemoteTestUtil(
-          'overrideInstallWebstoreItemApi',
-          appId,
+  chrome.test.assertTrue(!!remoteCall.callRemoteTestUtil(
+      'overrideInstallWebstoreItemApi', appId,
       [
         'DUMMY_ITEM_ID_FOR_TEST',  // Same ID in cws_container_mock/main.js.
         null                       // Success
-          ],
-          this.next);
-    },
+      ]));
+
   // Initiate an installation from the widget.
-    function(result) {
-      chrome.test.assertTrue(!!result);
-      remoteCall.callRemoteTestUtil(
-          'executeScriptInWebView',
-          appId,
-          ['#suggest-app-dialog webview',
-           'document.querySelector("button").click()'],
-          this.next);
-    },
+  chrome.test.assertTrue(
+      !!await remoteCall.callRemoteTestUtil('executeScriptInWebView', appId, [
+        '#suggest-app-dialog webview',
+        'document.querySelector("button").click()'
+      ]));
+
   // Wait until the installation is finished and the dialog is closed.
-    function(result) {
-      chrome.test.assertTrue(!!result);
-      remoteCall.waitForElementLost(appId, '#suggest-app-dialog').
-          then(this.next);
-    },
+  chrome.test.assertTrue(
+      !!await remoteCall.waitForElementLost(appId, '#suggest-app-dialog'));
+
   // Wait until the task is executed.
-    function(result) {
-      chrome.test.assertTrue(!!result);
-      remoteCall.waitUntilTaskExecutes(appId, 'dummytaskid|drive|open-with').
-          then(this.next);
-    },
-    // Check error
-    function() {
-      checkIfNoErrorsOccured(this.next);
-    }
-  ]);
+  await remoteCall.waitUntilTaskExecutes(appId, 'dummytaskid|drive|open-with');
 };