Move dart2js from sdk/lib/_internal/compiler to pkg/compiler

pkg/analyzer2dart/bin/analyzer2dart.dart

 // Copyright (c) 2014, 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.
 
 /** The entry point for the command-line version analyzer2dart. */
 library analyzer2dart.cmdline;
 
 import 'dart:io';
 
 import 'package:analyzer/file_system/physical_file_system.dart';
 import 'package:analyzer/src/generated/element.dart';
 import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer/src/generated/sdk_io.dart';
 import 'package:analyzer/src/generated/source_io.dart';
-import 'package:compiler/implementation/source_file_provider.dart';
+import 'package:compiler/src/source_file_provider.dart';
 
 import '../lib/src/closed_world.dart';
 import '../lib/src/driver.dart';
 import '../lib/src/converted_world.dart';
 import '../lib/src/dart_backend.dart';
 
 void main(List<String> args) {
   // TODO(paulberry): hacky
   String path = args[0];
 
@@ skipping 27 matching lines @@
   // visiting the ast and invoking the ir builder.
   // TODO(johnniwinther): Convert the analyzer element model into the dart2js
   // element model to fit the needs of the cps encoding above.
   ConvertedWorld convertedWorld = convertWorld(world);
 
   // TODO(johnniwinther): Feed the cps ir into the new dart2dart backend to
   // generate dart file(s).
   compileToDart(analyzer2Dart, convertedWorld);
 }