All strong mode cleaning of dart2js.

tests/compiler/dart2js/quarantined/http_test.dart

 // Copyright (c) 2014, 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.
 //
 // Test:
 //   *) Compiling a script fetched over HTTP.
 //   *) Importing a library fetched over HTTP.
 //   *) Automatically resolving package_root when script is fetched over HTTP.
 
 library http_launch_test;
@@ skipping 32 matching lines @@
 
 void check(ProcessResult result) {
   Expect.equals(0, result.exitCode);
   File outFile = new File(outFilePath);
   Expect.isTrue(outFile.existsSync());
   Expect.isTrue(outFile.readAsStringSync().contains("hello http tester"));
 }
 
 void checkNotFound(ProcessResult result, String filename) {
   Expect.notEquals(0, result.exitCode);
-  File outFile = new File(outFilePath);
   Expect.isTrue(result.stdout.contains("404"));
   Expect.isTrue(result.stdout.contains(filename));
 }
 
 cleanup() {
   File outFile = new File(outFilePath);
   if (outFile.existsSync()) {
     outFile.deleteSync();
   }
 }
@@ skipping 93 matching lines @@
 
 Future testHttp() {
   return HttpServer
       .bind(InternetAddress.LOOPBACK_IP_V4, 0)
       .then((HttpServer server) => serverRunning(server, "http"));
 }
 
 void initializeSSL() {
   Uri pathOfPkcert = pathOfData.resolve('pkcert');
   String testPkcertDatabase = pathOfPkcert.toFilePath();
+  // Issue 29926.
+  // ignore: UNDEFINED_METHOD
   SecureSocket.initialize(database: testPkcertDatabase, password: 'dartdart');
 }
 
 Future testHttps() {
   initializeSSL();
   return HttpServer
+      // Issue 29926.
+      // ignore: NOT_ENOUGH_REQUIRED_ARGUMENTS
       .bindSecure(InternetAddress.LOOPBACK_IP_V4, 0,
+          // Issue 29926.
+          // ignore: UNDEFINED_NAMED_PARAMETER
           certificateName: 'localhost_cert')
       .then((HttpServer server) => serverRunning(server, "https"));
 }
 
 main() {
   asyncStart();
   testHttp().then((_) => testHttps).whenComplete(asyncEnd);
 }