Start unraveling circularities between analyzer and front_end/kernel.

pkg/analyzer/lib/src/dart/analysis/file_state.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 file.
 
 import 'dart:convert';
 import 'dart:typed_data';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
 import 'package:analyzer/error/listener.dart';
@@ skipping 10 matching lines @@
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/generated/utilities_dart.dart';
 import 'package:analyzer/src/source/source_resource.dart';
 import 'package:analyzer/src/summary/api_signature.dart';
 import 'package:analyzer/src/summary/format.dart';
 import 'package:analyzer/src/summary/idl.dart';
 import 'package:analyzer/src/summary/name_filter.dart';
 import 'package:analyzer/src/summary/summarize_ast.dart';
 import 'package:convert/convert.dart';
 import 'package:crypto/crypto.dart';
-import 'package:front_end/src/fasta/analyzer/ast_builder.dart' as fasta;
-import 'package:front_end/src/fasta/analyzer/element_store.dart' as fasta;
-import 'package:front_end/src/fasta/analyzer/mock_element.dart' as fasta;
+import 'package:analyzer/src/fasta/ast_builder.dart' as fasta;
+import 'package:analyzer/src/fasta/element_store.dart' as fasta;
+import 'package:analyzer/src/fasta/mock_element.dart' as fasta;
 import 'package:front_end/src/fasta/builder/builder.dart' as fasta;
 import 'package:front_end/src/fasta/builder/scope.dart' as fasta;
 import 'package:front_end/src/fasta/parser/parser.dart' as fasta;
 import 'package:front_end/src/fasta/scanner.dart' as fasta;
 import 'package:meta/meta.dart';
 
 /**
  * [FileContentOverlay] is used to temporary override content of files.
  */
 class FileContentOverlay {
@@ skipping 752 matching lines @@
   noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
 }
 
 class _FastaEmptyScope extends fasta.Scope {
   _FastaEmptyScope() : super({}, null);
 }
 
 class _FastaInterfaceTypeProxy implements fasta.KernelInterfaceType {
   noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
 }