Enable running of fasta tests on build bot.

pkg/front_end/lib/src/fasta/testing/suite.dart

 // Copyright (c) 2016, 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.md file.
 
 library fasta.testing.suite;
 
 import 'dart:async' show
     Future;
 
 import 'dart:convert' show
@@ skipping 81 matching lines @@
 class FeContext extends TestContext {
   final TranslateUri uriTranslator;
 
   final List<Step> steps;
 
   final ExpectationSet expectationSet =
       new ExpectationSet.fromJsonList(JSON.decode(EXPECTATIONS));
 
   Future<Program> platform;
 
-  FeContext(String sdk, Uri vm, Uri packages, bool strongMode,
+  FeContext(Uri sdk, Uri vm, Uri packages, bool strongMode,
       DartSdk dartSdk, bool updateExpectations, this.uriTranslator,
       bool fullCompile, AstKind astKind)
       : steps = <Step>[
           new Outline(fullCompile, astKind),
           const Print(),
           new Verify(fullCompile),
           new MatchExpectation(
               fullCompile
                   ? ".${shortenAstKindName(astKind)}.expect"
                   : ".outline.expect",
@@ skipping 20 matching lines @@
       }
       Library mainLibrary = program.mainMethod.enclosingLibrary;
       program.uriToSource.remove(mainLibrary.fileUri);
       return new Program(
           program.libraries.where((Library l) => l != mainLibrary).toList(),
           program.uriToSource);
     });
   }
 
   static Future<FeContext> create(Chain suite, Map<String, String> environment,
-      String sdk, Uri vm, Uri packages, bool strongMode, DartSdk dartSdk,
+      Uri sdk, Uri vm, Uri packages, bool strongMode, DartSdk dartSdk,
       bool updateExpectations) async {
     TranslateUri uriTranslator = await TranslateUri.parse(packages);
     String astKindString = environment[AST_KIND_INDEX];
     AstKind astKind = astKindString == null
         ? null : AstKind.values[int.parse(astKindString)];
     return new FeContext(
         sdk, vm, packages, strongMode, dartSdk, updateExpectations,
         uriTranslator, environment.containsKey(ENABLE_FULL_COMPILE), astKind);
   }
 }
@@ skipping 28 matching lines @@
       p = await sourceTarget.writeOutline(null);
       if (fullCompile) {
         p = await sourceTarget.writeProgram(null, astKind);
       }
     } on InputError catch (e, s) {
       return fail(null, e.error, s);
     }
     return pass(p);
   }
 }