Revert "Switch FE to use the libraries.json format."

pkg/front_end/test/kernel_generator_test.dart

 // Copyright (c) 2017, 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.
 
 import 'package:front_end/front_end.dart';
 import 'package:front_end/src/fasta/fasta_codes.dart';
 import 'package:front_end/src/fasta/kernel/utils.dart';
 import 'package:front_end/src/fasta/deprecated_problems.dart'
     show deprecated_InputError;
 import 'package:front_end/src/testing/compiler_common.dart';
 import 'package:kernel/ast.dart';
 
 import 'package:test/test.dart';
 
 main() {
   group('kernelForProgram', () {
     test('compiler fails if it cannot find sdk sources', () async {
       var errors = [];
       var options = new CompilerOptions()
-        ..librariesSpecificationUri = invalidCoreLibsSpecUri
+        ..dartLibraries = invalidCoreLibs
         ..sdkSummary = null
         ..compileSdk = true // To prevent FE from loading an sdk-summary.
         ..onError = (e) => errors.add(e);
 
       var program =
           await compileScript('main() => print("hi");', options: options);
       expect(program, isNull);
       expect(errors, isNotEmpty);
     });
 
     test('compiler fails if it cannot find sdk summary', () async {
       var errors = [];
       var options = new CompilerOptions()
         ..sdkSummary = Uri.parse('file:///not_existing_summary_file')
         ..onError = (e) => errors.add(e);
 
       var program =
           await compileScript('main() => print("hi");', options: options);
       expect(program, isNull);
       expect(errors, isNotEmpty);
     });
 
     test('by default program is compiled using summaries', () async {
       var options = new CompilerOptions()
-        // Note: we define [librariesSpecificationUri] with a specification that
-        // contains broken URIs to ensure we do not attempt to lookup for
-        // sources of the sdk directly.
-        ..librariesSpecificationUri = invalidCoreLibsSpecUri;
+        // Note: we define [dartLibraries] with broken URIs to ensure we do not
+        // attempt to lookup for sources of the sdk directly.
+        ..dartLibraries = invalidCoreLibs;
       var program =
           await compileScript('main() => print("hi");', options: options);
       var core = program.libraries.firstWhere(isDartCoreLibrary);
       var printMember = core.members.firstWhere((m) => m.name.name == 'print');
 
       // Note: summaries created by the SDK today contain empty statements as
       // method bodies.
       expect(printMember.function.body is EmptyStatement, isTrue);
     });
 
@@ skipping 147 matching lines @@
       checkDCallsC(unitD1);
 
       var unitD2 = await compileUnit(['d.dart'], sources,
           inputSummaries: ['bc.dill', 'a.dill']);
       checkDCallsC(unitD2);
     });
 
     // TODO(sigmund): add tests with trimming dependencies
   });
 }