Remove babel from DEPS and (dart2js) IE support from test infra.

Tested: N/A
Change-Id: Ib1804b49c40cac9be52e732090e8160444ebb48d
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/417948
Commit-Queue: Mayank Patke <fishythefish@google.com>
Reviewed-by: Alexander Thomas <athom@google.com>
Reviewed-by: Bob Nystrom <rnystrom@google.com>
Reviewed-by: Sigmund Cherem <sigmund@google.com>

DEPS

@@ -260,13 +260,6 @@ deps = {
   Var("dart_root") + "/third_party/markupsafe":
       Var("chromium_git") + "/chromium/src/third_party/markupsafe.git" +
       "@" + Var("markupsafe_rev"),
-  Var("dart_root") + "/third_party/babel": {
-      "packages": [{
-          "package": "dart/third_party/babel",
-          "version": "version:7.4.5",
-      }],
-      "dep_type": "cipd",
-  },
   Var("dart_root") + "/third_party/zlib":
       Var("chromium_git") + "/chromium/src/third_party/zlib.git" +
       "@" + Var("zlib_rev"),

docs/Building.md

@@ -158,9 +158,9 @@ All tests are executed using the `test.py` script under `tools/`.  You need to u
 $ ./tools/build.py --mode release --arch ia32 most run_ffi_unit_tests
 ```
 
-Now you can run all tests as follows (Safari, Firefox, Chrome, and IE must be installed, if you want to run the tests on them):
+Now you can run all tests as follows (Safari, Firefox, and Chrome must be installed, if you want to run the tests on them):
 ```bash
-$ ./tools/test.py -mrelease --arch=ia32 --compiler=dartk,dart2js --runtime=vm,d8,chrome,firefox,[safari,ie10]
+$ ./tools/test.py -mrelease --arch=ia32 --compiler=dartk,dart2js --runtime=vm,d8,chrome,firefox,[safari]
 ```
 Specify the compiler used (optional -- only necessary if you are compiling to JavaScript (required for most browsers), the default is "none") and a runtime (where the code will be run).
 

docs/Status-files.md

@@ -13,7 +13,7 @@ and runtimes we maintain and support.
 We have tens of thousands of tests and a single test may be run across a
 combinatorial explosion of configurations. Does the static analyzer report any
 errors on it? In strong mode? Does it run on the standalone VM? Can dart2js
-compile it? Does the resulting code run in Chrome? Firefox? IE? In checked mode?
+compile it? Does the resulting code run in Chrome? Firefox? In checked mode?
 With minification on? You get the idea.
 
 Many tests are only meaningful for certain combinations of configurations. A

pkg/smith/lib/configuration.dart

@@ -282,7 +282,6 @@ class Configuration {
         name, architecture, compiler, mode, runtime, system,
         nnbdMode: nnbdMode,
         sanitizer: sanitizer,
-        babel: stringOption("babel"),
         builderTag: stringOption("builder-tag"),
         genKernelOptions: stringListOption("gen-kernel-options"),
         vmOptions: stringListOption("vm-options"),
@@ -329,8 +328,6 @@ class Configuration {
 
   final Sanitizer sanitizer;
 
-  final String babel;
-
   final String builderTag;
 
   final List<String> genKernelOptions;
@@ -385,7 +382,6 @@ class Configuration {
       this.runtime, this.system,
       {NnbdMode? nnbdMode,
       Sanitizer? sanitizer,
-      String? babel,
       String? builderTag,
       List<String>? genKernelOptions,
       List<String>? vmOptions,
@@ -408,7 +404,6 @@ class Configuration {
       bool? useQemu})
       : nnbdMode = nnbdMode ?? NnbdMode.strong,
         sanitizer = sanitizer ?? Sanitizer.none,
-        babel = babel ?? "",
         builderTag = builderTag ?? "",
         genKernelOptions = genKernelOptions ?? <String>[],
         vmOptions = vmOptions ?? <String>[],
@@ -448,7 +443,6 @@ class Configuration {
     this.system, {
     required this.nnbdMode,
     required this.sanitizer,
-    required this.babel,
     required this.builderTag,
     required this.genKernelOptions,
     required this.vmOptions,
@@ -486,7 +480,6 @@ class Configuration {
         System.host,
         nnbdMode: source.nnbdMode,
         sanitizer: source.sanitizer,
-        babel: source.babel,
         builderTag: source.builderTag,
         genKernelOptions: source.genKernelOptions,
         vmOptions: source.vmOptions,
@@ -523,7 +516,6 @@ class Configuration {
       system == other.system &&
       nnbdMode == other.nnbdMode &&
       sanitizer == other.sanitizer &&
-      babel == other.babel &&
       builderTag == other.builderTag &&
       _listsEqual(genKernelOptions, other.genKernelOptions) &&
       _listsEqual(vmOptions, other.vmOptions) &&
@@ -575,7 +567,6 @@ class Configuration {
       runtime.hashCode ^
       system.hashCode ^
       nnbdMode.hashCode ^
-      babel.hashCode ^
       builderTag.hashCode ^
       genKernelOptions.join(" & ").hashCode ^
       vmOptions.join(" & ").hashCode ^
@@ -619,7 +610,6 @@ class Configuration {
       fields.add("$name: [${field.join(", ")}]");
     }
 
-    if (babel.isNotEmpty) fields.add("babel: $babel");
     if (builderTag.isNotEmpty) fields.add("builder-tag: $builderTag");
     stringListField("gen-kernel-options", genKernelOptions);
     stringListField("vm-options", vmOptions);
@@ -676,7 +666,6 @@ class Configuration {
 
     fields.add("nnbd: $nnbdMode ${other.nnbdMode}");
     fields.add("sanitizer: $sanitizer ${other.sanitizer}");
-    stringField("babel", babel, other.babel);
     stringField("builder-tag", builderTag, other.builderTag);
     stringListField(
         "gen-kernel-options", genKernelOptions, other.genKernelOptions);
@@ -865,9 +854,6 @@ class Compiler extends NamedEnum {
           Runtime.firefox,
           Runtime.chrome,
           Runtime.safari,
-          Runtime.ie9,
-          Runtime.ie10,
-          Runtime.ie11,
           Runtime.edge,
           Runtime.chromeOnAndroid,
         ];
@@ -1007,9 +993,6 @@ class Runtime extends NamedEnum {
   static const firefox = Runtime._('firefox');
   static const chrome = Runtime._('chrome');
   static const safari = Runtime._('safari');
-  static const ie9 = Runtime._('ie9');
-  static const ie10 = Runtime._('ie10');
-  static const ie11 = Runtime._('ie11');
   static const edge = Runtime._('edge');
   static const chromeOnAndroid = Runtime._('chromeOnAndroid');
   static const none = Runtime._('none');
@@ -1026,9 +1009,6 @@ class Runtime extends NamedEnum {
     firefox,
     chrome,
     safari,
-    ie9,
-    ie10,
-    ie11,
     edge,
     chromeOnAndroid,
     none
@@ -1043,27 +1023,14 @@ class Runtime extends NamedEnum {
 
   const Runtime._(super.name);
 
-  bool get isBrowser => const [
+  bool get isBrowser =>
-        ie9,
+      const [edge, safari, chrome, firefox, chromeOnAndroid].contains(this);
-        ie10,
-        ie11,
-        edge,
-        safari,
-        chrome,
-        firefox,
-        chromeOnAndroid
-      ].contains(this);
-
-  bool get isIE => name.startsWith("ie");
 
   bool get isSafari => name.startsWith("safari");
 
   /// Whether this runtime is a command-line JavaScript environment.
   bool get isJSCommandLine => const [d8, jsc, jsshell].contains(this);
 
-  /// If the runtime doesn't support `Window.open`, we use iframes instead.
-  bool get requiresIFrame => !const [ie11, ie10].contains(this);
-
   /// The preferred compiler to use with this runtime if no other compiler is
   /// specified.
   Compiler get defaultCompiler {
@@ -1080,9 +1047,6 @@ class Runtime extends NamedEnum {
       case firefox:
       case chrome:
       case safari:
-      case ie9:
-      case ie10:
-      case ie11:
       case edge:
       case chromeOnAndroid:
         return Compiler.dart2js;

pkg/status_file/test/status_expression_test.dart

@@ -108,14 +108,15 @@ void testNotBoolean() {
 
 void testNotEqual() {
   // Test the != operator.
-  var expression = Expression.parse(r"$compiler == dart2js && $runtime != ie9");
+  var expression =
+      Expression.parse(r"$compiler == dart2js && $runtime != safari");
   Expect.equals(
-      r"$compiler == dart2js && $runtime != ie9", expression.toString());
+      r"$compiler == dart2js && $runtime != safari", expression.toString());
 
   // Test BooleanExpression.evaluate().
   var environment = TestEnvironment({
     "compiler": "none",
-    "runtime": "ie9",
+    "runtime": "safari",
   });
 
   Expect.isFalse(expression.evaluate(environment));
@@ -123,7 +124,7 @@ void testNotEqual() {
   Expect.isFalse(expression.evaluate(environment));
 
   environment["compiler"] = "dart2js";
-  environment["runtime"] = "ie9";
+  environment["runtime"] = "safari";
   Expect.isFalse(expression.evaluate(environment));
   environment["runtime"] = "chrome";
   Expect.isTrue(expression.evaluate(environment));

pkg/test_runner/lib/src/babel_transform.js

@@ -1,12 +0,0 @@
-// Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-
-const babelStandalonePath = arguments[0];
-load(babelStandalonePath);
-const inputFilePath = arguments[2];
-const input = read(inputFilePath);
-const options = JSON.parse(arguments[1]);
-const output = Babel.transform(input, options).code;
-console.log(output);

pkg/test_runner/lib/src/browser_controller.dart

@@ -81,11 +81,6 @@ abstract class Browser {
         var service = WebDriverService.fromRuntime(Runtime.safari);
         browser = Safari(service.port);
         break;
-      case Runtime.ie9:
-      case Runtime.ie10:
-      case Runtime.ie11:
-        browser = IE(configuration.browserLocation);
-        break;
       default:
         throw "unreachable";
     }
@@ -98,9 +93,6 @@ abstract class Browser {
     'ff',
     'firefox',
     'chrome',
-    'ie9',
-    'ie10',
-    'ie11'
   ];
 
   static bool requiresFocus(String browserName) {
@@ -425,87 +417,6 @@ class Chrome extends Browser {
   }
 }
 
-class IE extends Browser {
-  IE(this._binary);
-
-  final String _binary;
-
-  @override
-  Future<String> get version async {
-    var args = [
-      "query",
-      "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\Internet Explorer",
-      "/v",
-      "svcVersion"
-    ];
-    final result = await Process.run("reg", args);
-    if (result.exitCode != 0) {
-      throw StateError("Could not get the version of internet explorer");
-    }
-    // The string we get back looks like this:
-    // HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer
-    //    version    REG_SZ    9.0.8112.16421
-    var findString = "REG_SZ";
-    var index = (result.stdout as String).indexOf(findString);
-    if (index > 0) {
-      return (result.stdout as String)
-          .substring(index + findString.length)
-          .trim();
-    }
-    throw StateError("Could not get the version of internet explorer");
-  }
-
-  // Clears the recovery cache and allows popups on localhost if the static
-  // resetBrowserConfiguration flag is set.
-  Future<bool> resetConfiguration() async {
-    if (!Browser.resetBrowserConfiguration) return true;
-    const ieKey = r"HKCU\Software\Microsoft\Internet Explorer";
-    // Turn off popup blocker
-    await _setRegistryKey("$ieKey\\New Windows", "PopupMgr",
-        data: "0", type: "REG_DWORD");
-    // Allow popups from localhost
-    await _setRegistryKey("$ieKey\\New Windows\\Allow", "127.0.0.1");
-    // Disable IE first run wizard
-    await _setRegistryKey("$ieKey\\Main", "DisableFirstRunCustomize",
-        data: "1", type: "REG_DWORD");
-
-    var localAppData = Platform.environment['LOCALAPPDATA'];
-    var dir = Directory("$localAppData\\Microsoft\\"
-        "Internet Explorer\\Recovery");
-    try {
-      dir.delete(recursive: true);
-      return true;
-    } catch (error) {
-      _logEvent("Deleting recovery dir failed with $error");
-      return false;
-    }
-  }
-
-  @override
-  Future<bool> start(String url) async {
-    _logEvent("Starting ie browser on: $url");
-    await resetConfiguration();
-    _logEvent("Got version: ${await version}");
-    return startBrowserProcess(_binary, [url]);
-  }
-
-  Future<void> _setRegistryKey(String key, String value,
-      {String? data, String? type}) async {
-    var args = <String>[
-      "add",
-      key,
-      "/v",
-      value,
-      "/f",
-      if (type != null) ...["/t", type]
-    ];
-    var result = await Process.run("reg", args);
-    if (result.exitCode != 0) {
-      _logEvent("Failed to set '$key' to '$value'");
-    }
-  }
-}
-
 class AndroidChrome extends Browser {
   static const String viewAction = 'android.intent.action.VIEW';
   static const String mainAction = 'android.intent.action.MAIN';
@@ -711,7 +622,6 @@ class BrowserTestOutput {
 class BrowserTestRunner {
   static const int _maxNextTestTimeouts = 10;
   static const Duration _nextTestTimeout = Duration(seconds: 120);
-  static const Duration _restartBrowserInterval = Duration(seconds: 60);
 
   /// If the queue was recently empty, don't start another browser.
   static const Duration _minNonemptyQueueTime = Duration(seconds: 1);
@@ -950,25 +860,6 @@ class BrowserTestRunner {
     // We are currently terminating this browser, don't start a new test.
     if (status.timeout) return null;
 
-    // Restart Internet Explorer if it has been
-    // running for longer than RESTART_BROWSER_INTERVAL. The tests have
-    // had flaky timeouts, and this may help.
-    if ((configuration.runtime == Runtime.ie10 ||
-            configuration.runtime == Runtime.ie11) &&
-        status.timeSinceRestart.elapsed > _restartBrowserInterval) {
-      var id = status.browser.id;
-      // Reset stopwatch so we don't trigger again before restarting.
-      status.timeout = true;
-      status.browser.close().then((_) {
-        // We don't want to start a new browser if we are terminating.
-        if (underTermination) return;
-        removeBrowser(id);
-        requestBrowser();
-      });
-      // Don't send a test to the browser we are restarting.
-      return null;
-    }
-
     var test = testQueue.removeLast();
     // If our queue isn't empty, try starting more browsers
     if (testQueue.isEmpty) {
@@ -1306,7 +1197,6 @@ body div {
       var number_div = document.getElementById('number');
       var executing_div = document.getElementById('currently_executing');
       var error_div = document.getElementById('unhandled_error');
-      var use_iframe = ${configuration.runtime.requiresIFrame};
       var start = new Date();
 
       function newTaskHandler() {
@@ -1369,21 +1259,10 @@ body div {
         number_of_tests++;
         number_div.textContent = number_of_tests;
         executing_div.textContent = url;
-        if (use_iframe) {
+        if (typeof testing_window != 'undefined') {
-          embedded_iframe.onload = null;
+          testing_window.close();
-          embedded_iframe_div.removeChild(embedded_iframe);
-          embedded_iframe = document.createElement('iframe');
-          embedded_iframe.id = "embedded_iframe";
-          embedded_iframe.width='800px';
-          embedded_iframe.height='600px';
-          embedded_iframe_div.appendChild(embedded_iframe);
-          embedded_iframe.src = url;
-        } else {
-          if (typeof testing_window != 'undefined') {
-            testing_window.close();
-          }
-          testing_window = window.open(url);
         }
+        testing_window = window.open(url);
         test_started = false;
         test_completed = false;
       }
@@ -1472,9 +1351,7 @@ body div {
       function messageHandler(e) {
         var msg = e.data;
         if (typeof msg != 'string') return;
-        var expectedSource =
+        if (e.source != testing_window) {
-            use_iframe ? embedded_iframe.contentWindow : testing_window;
-        if (e.source != expectedSource) {
             reportError("Message received from old test window: " + msg);
             return;
         }

pkg/test_runner/lib/src/compiler_configuration.dart

@@ -472,17 +472,11 @@ class Dart2jsCompilerConfiguration extends CompilerConfiguration {
     var inputFile = arguments.last;
     var inputFilename = Uri.file(inputFile).pathSegments.last;
     var out = "$tempDir/${inputFilename.replaceAll('.dart', '.js')}";
-    var babel = _configuration.babel;
-    var babelOut = out;
-    if (babel.isNotEmpty) {
-      out = out.replaceAll('.js', '.raw.js');
-    }
     var commands = [
       computeCompilationCommand(out, compilerArguments, environmentOverrides),
-      if (babel.isNotEmpty) computeBabelCommand(out, babelOut, babel)
     ];
 
-    return CommandArtifact(commands, babelOut, 'application/javascript');
+    return CommandArtifact(commands, out, 'application/javascript');
   }
 
   @override
@@ -499,22 +493,6 @@ class Dart2jsCompilerConfiguration extends CompilerConfiguration {
     return runtimeConfiguration.dart2jsPreambles(preambleDir)
       ..add(artifact!.filename);
   }
-
-  Command computeBabelCommand(String input, String output, String options) {
-    var uri = Repository.uri;
-    var babelTransform =
-        uri.resolve('pkg/test_runner/lib/src/babel_transform.js').toFilePath();
-    var babelStandalone =
-        uri.resolve('third_party/babel/babel.min.js').toFilePath();
-    return CompilationCommand(
-        'babel',
-        output,
-        [],
-        _configuration.runtimeConfiguration.d8FileName,
-        [babelTransform, "--", babelStandalone, options, input],
-        {},
-        alwaysCompile: true); // TODO(athom): ensure dependency tracking works.
-  }
 }
 
 /// Common configuration for dart2wasm-based tools, such as dart2wasm.

pkg/test_runner/lib/src/configuration.dart

@@ -183,7 +183,6 @@ class TestConfiguration {
   final String? serviceResponseSizesDirectory;
   final String outputDirectory;
   final String? suiteDirectory;
-  String get babel => configuration.babel;
   String get builderTag => configuration.builderTag;
   final List<String> reproducingArguments;
 
@@ -386,15 +385,6 @@ class TestConfiguration {
             '/Applications/Google Chrome.app/Contents/MacOS/Google Chrome',
         System.linux: '/usr/bin/google-chrome'
       },
-      Runtime.ie9: {
-        System.win: 'C:\\Program Files\\Internet Explorer\\iexplore.exe'
-      },
-      Runtime.ie10: {
-        System.win: 'C:\\Program Files\\Internet Explorer\\iexplore.exe'
-      },
-      Runtime.ie11: {
-        System.win: 'C:\\Program Files\\Internet Explorer\\iexplore.exe'
-      }
     };
 
     location = locations[runtime]![System.find(Platform.operatingSystem)];
@@ -467,15 +457,6 @@ class TestConfiguration {
       isValid = false;
     }
 
-    if (runtime.isIE &&
-        Platform.operatingSystem != 'windows' &&
-        !listStatusFiles &&
-        !listTests) {
-      print("Warning: cannot run Internet Explorer on non-Windows operating"
-          " system.");
-      isValid = false;
-    }
-
     if (architecture == Architecture.ia32 && compiler == Compiler.dartkp) {
       print("Warning: IA32 does not support AOT mode.");
       isValid = false;

pkg/test_runner/lib/src/environment.dart

@@ -23,7 +23,6 @@ final _variables = {
   "host_asserts": _Variable.bool((c) => c.enableHostAsserts),
   "hot_reload": _Variable.bool((c) => c.hotReload),
   "hot_reload_rollback": _Variable.bool((c) => c.hotReloadRollback),
-  "ie": _Variable.bool((c) => c.runtime.isIE),
   "jscl": _Variable.bool((c) => c.runtime.isJSCommandLine),
   "minified": _Variable.bool((c) => c.isMinified),
   "mode": _Variable((c) => c.mode.name, Mode.names),

pkg/test_runner/lib/src/options.dart

@@ -95,9 +95,6 @@ jsshell:          Run JavaScript from the command line using Firefox's js-shell.
 firefox:
 chrome:
 safari:
-ie9:
-ie10:
-ie11:
 chromeOnAndroid:  Run JavaScript in the specified browser.
 
 none:             No runtime, compile only.''')
@@ -348,10 +345,6 @@ options. Used to be able to make sane updates to the status files.''',
     ..addMultiOption('enable-experiment',
         aliases: ['experiments', 'enable_experiment'],
         help: 'Experiment flags to enable.')
-    ..addOption('babel',
-        help: '''Transforms dart2js output with Babel. The value must be
-Babel options JSON.''',
-        hide: true)
     ..addFlag('default-suites',
         hide: true,
         help: 'Include the default suites in addition to the requested suites.')
@@ -434,7 +427,6 @@ has been specified on the command line.''')
     'vm-options',
     'dart2js-options',
     'enable-experiment',
-    'babel',
     'builder-tag',
     'use-qemu'
   };
@@ -808,7 +800,6 @@ has been specified on the command line.''')
                   dart2jsOptions: dart2jsOptions,
                   ddcOptions: ddcOptions,
                   experiments: experiments,
-                  babel: data['babel'] as String?,
                   builderTag: data["builder-tag"] as String?,
                   useQemu: data["use-qemu"] as bool);
               addConfiguration(configuration);

pkg/test_runner/lib/src/process_queue.dart

@@ -577,12 +577,6 @@ class CommandExecutorImpl implements CommandExecutor {
           adbDevicePool!.releaseDevice(device);
         }
       });
-    } else if (command is CompilationCommand &&
-        command.displayName == 'babel') {
-      return RunningProcess(command, timeout,
-              configuration: globalConfiguration,
-              outputFile: io.File(command.outputFile))
-          .run();
     } else if (command is ProcessCommand) {
       return RunningProcess(command, timeout,
               configuration: globalConfiguration)

pkg/test_runner/lib/src/runtime_configuration.dart

@@ -24,9 +24,6 @@ abstract class RuntimeConfiguration {
       case Runtime.chrome:
       case Runtime.chromeOnAndroid:
       case Runtime.firefox:
-      case Runtime.ie11:
-      case Runtime.ie10:
-      case Runtime.ie9:
       case Runtime.safari:
         // TODO(ahe): Replace this with one or more browser runtimes.
         return DummyRuntimeConfiguration();

pkg/test_runner/lib/src/status_reporter.dart

@@ -40,7 +40,7 @@ final _combinations = {
       'compiler': 'none'
     },
     {
-      'runtimes': ['chrome', 'ff', 'ie11', 'ie10'],
+      'runtimes': ['chrome', 'ff'],
       'modes': ['release'],
       'archs': ['ia32'],
       'compiler': 'dart2js'

pkg/test_runner/lib/src/test_configurations.dart

@@ -106,15 +106,7 @@ Future testConfigurations(List<TestConfiguration> configurations) async {
       }
     }
 
-    if (configuration.runtime.isIE) {
+    if (configuration.runtime.isSafari) {
-      // NOTE: We've experienced random timeouts of tests on ie9/ie10. The
-      // underlying issue has not been determined yet. Our current hypothesis
-      // is that windows does not handle the IE processes independently.
-      // If we have more than one browser and kill a browser we are seeing
-      // issues with starting up a new browser just after killing the hanging
-      // browser.
-      maxBrowserProcesses = 1;
-    } else if (configuration.runtime.isSafari) {
       // Safari does not allow us to run from a fresh profile, so we can only
       // use one browser. Additionally, you can not start two simulators
       // for mobile safari simultaneously.

pkg/test_runner/lib/src/testing_servers.dart

@@ -341,8 +341,6 @@ class TestingServers {
         // Allow loading from http://*:$allowedPort in browsers.
         allowedOrigin = '${origin.scheme}://${origin.host}:$allowedPort';
       } else {
-        // IE10 appears to be bugged and is not sending the Origin header
-        // when making CORS requests to the same domain but different port.
         allowedOrigin = '*';
       }
 
@@ -355,8 +353,8 @@ class TestingServers {
     }
     if (useContentSecurityPolicy) {
       // Chrome respects the standardized Content-Security-Policy header,
-      // whereas Firefox and IE10 use X-Content-Security-Policy. Safari
+      // whereas Firefox uses X-Content-Security-Policy. Safari still uses the
-      // still uses the WebKit- prefixed version.
+      // WebKit- prefixed version.
       var contentHeaderValue = [
         "script-src 'self'",
         "object-src 'self'",

runtime/observatory/tests/observatory_ui/observatory_ui.status

@@ -11,5 +11,5 @@
 # custom elements are not supported on old browsers, we don't
 # intend for observatory to work on old browser versions, so
 # skipping.
-[ $runtime == ff || $runtime == ie10 || $runtime == ie11 || $runtime == safari ]
+[ $runtime == ff || $runtime == safari ]
 *: SkipByDesign

tests/co19/co19-dart2js.status

@@ -163,17 +163,6 @@ LibTest/html/IFrameElement/onTouchLeave_A01_t01: SkipByDesign # TouchEvent const
 LibTest/html/IFrameElement/onTouchMove_A01_t01: SkipByDesign # TouchEvent constructor not exposed in FF
 LibTest/html/IFrameElement/onTouchStart_A01_t01: SkipByDesign # TouchEvent constructor not exposed in FF
 
-[ $compiler == dart2js && $runtime == ie11 ]
-LibTest/collection/ListBase/ListBase_class_A01_t04: SkipSlow # slow babeljs transformation
-LibTest/collection/ListBase/ListBase_class_A01_t05: SkipSlow # slow babeljs transformation
-LibTest/collection/ListBase/ListBase_class_A01_t06: SkipSlow # slow babeljs transformation
-LibTest/collection/ListMixin/ListMixin_class_A01_t04: SkipSlow # slow babeljs transformation
-LibTest/collection/ListMixin/ListMixin_class_A01_t05: SkipSlow # slow babeljs transformation
-LibTest/collection/ListMixin/ListMixin_class_A01_t06: SkipSlow # slow babeljs transformation
-LibTest/core/List/List_class_A01_t04: SkipSlow # slow babeljs transformation
-LibTest/core/List/List_class_A01_t05: SkipSlow # slow babeljs transformation
-LibTest/core/List/List_class_A01_t06: SkipSlow # slow babeljs transformation
-
 [ $compiler == dart2js && $runtime == safari ]
 LibTest/html/Element/isContentEditable_A01_t01: Skip # 98% fails in Safari, evades flake detection https://github.com/dart-lang/sdk/issues/50718
 LibTest/html/Element/isContentEditable_A02_t01: Skip # evades flake detection https://github.com/dart-lang/sdk/issues/50718

tests/lib/lib.status

@@ -36,10 +36,6 @@ isolate/package_config_getter_test: SkipByDesign # AOT mode doesn't preserve pac
 convert/streamed_conversion_utf8_decode_test: Slow, Pass # Issue 12029
 mirrors/mirrors_reader_test: Slow, Pass # Issue 16589
 
-[ $runtime == ie11 ]
-html/request_animation_frame_test: Skip # Times out. Issue 22167
-html/transition_event_test: Skip # Times out. Issue 22167
-
 [ $runtime == safari ]
 html/indexeddb_1_test/functional: Skip # Times out. Issue 21433
 html/indexeddb_3_test: Skip # Times out 1 out of 10.

tools/bots/test_matrix.json

@@ -346,12 +346,6 @@
         "use-sdk": true
       }
     },
-    "dart2js-win-ie11": {
-      "options": {
-        "babel": "{\"presets\":[\"es2015\"]}",
-        "use-sdk": true
-      }
-    },
     "dart2js-win-edge": {
       "options": {
         "use-sdk": true