Start unraveling circularities between analyzer and front_end/kernel.

pkg/analyzer/lib/src/dart/analysis/file_state.dart

Index: pkg/analyzer/lib/src/dart/analysis/file_state.dart
diff --git a/pkg/analyzer/lib/src/dart/analysis/file_state.dart b/pkg/analyzer/lib/src/dart/analysis/file_state.dart
index 11e3674946d17b84a8a4341eea58c226bfca8492..a6457e0e658373897906f5d99ffc680bddf48bad 100644
--- a/pkg/analyzer/lib/src/dart/analysis/file_state.dart
+++ b/pkg/analyzer/lib/src/dart/analysis/file_state.dart
@@ -28,9 +28,9 @@ 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;