Start unraveling circularities between analyzer and front_end/kernel.

pkg/front_end/lib/src/fasta/testing/kernel_chain.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.
 
 // TODO(ahe): Copied from closure_conversion branch of kernel, remove this file
 // when closure_conversion is merged with master.
 
 library kernel.testing.kernel_chain;
 
 import 'dart:async' show Future;
@@ skipping 11 matching lines @@
 import 'package:kernel/ast.dart' show Library, Program;
 
 import '../kernel/verifier.dart' show verifyProgram;
 
 import 'package:kernel/binary/ast_to_binary.dart' show BinaryPrinter;
 
 import 'package:kernel/binary/ast_from_binary.dart' show BinaryBuilder;
 
 import 'package:analyzer/src/generated/sdk.dart' show DartSdk;
 
-import 'package:kernel/analyzer/loader.dart'
+import 'package:analyzer/src/kernel/loader.dart'
     show DartLoader, DartOptions, createDartSdk;
 
 import 'package:kernel/target/targets.dart' show Target, TargetFlags, getTarget;
 
 import 'package:testing/testing.dart'
     show Chain, ChainContext, Result, StdioProcess, Step, TestDescription;
 
 import 'package:kernel/ast.dart' show Program;
 
 import 'package:package_config/discovery.dart' show loadPackagesFile;
@@ skipping 313 matching lines @@
 
 Future openWrite(Uri uri, f(IOSink sink)) async {
   IOSink sink = new File.fromUri(uri).openWrite();
   try {
     await f(sink);
   } finally {
     await sink.close();
   }
   print("Wrote $uri");
 }