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

tests/compiler/dart2js/exit_code_test.dart

 // Copyright (c) 2013, 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.
 
 // Test the exit code of dart2js in case of exceptions, fatal errors, errors,
 // warnings, etc.
 
 
 import 'dart:async';
 import 'dart:io' show Platform;
 
 import 'package:async_helper/async_helper.dart';
 import 'package:expect/expect.dart';
 
 import 'package:compiler/compiler.dart' as api;
-import 'package:compiler/implementation/dart2js.dart' as entry;
-import 'package:compiler/implementation/dart2jslib.dart';
-import 'package:compiler/implementation/apiimpl.dart' as apiimpl;
-import 'package:compiler/implementation/elements/elements.dart';
-import 'package:compiler/implementation/library_loader.dart';
-import 'package:compiler/implementation/resolution/resolution.dart';
-import 'package:compiler/implementation/scanner/scannerlib.dart';
-import 'package:compiler/implementation/util/util.dart';
+import 'package:compiler/src/dart2js.dart' as entry;
+import 'package:compiler/src/dart2jslib.dart';
+import 'package:compiler/src/apiimpl.dart' as apiimpl;
+import 'package:compiler/src/elements/elements.dart';
+import 'package:compiler/src/library_loader.dart';
+import 'package:compiler/src/resolution/resolution.dart';
+import 'package:compiler/src/scanner/scannerlib.dart';
+import 'package:compiler/src/util/util.dart';
 
 class TestCompiler extends apiimpl.Compiler {
   final String testMarker;
   final String testType;
   final Function onTest;
 
   TestCompiler(api.CompilerInputProvider inputProvider,
                 api.CompilerOutputProvider outputProvider,
                 api.DiagnosticHandler handler,
                 Uri libraryRoot,
@@ skipping 231 matching lines @@
     int countResults(Map runType) {
       return runType.length *
              tests.values.where((r) => r == runType).length;
     }
 
     Expect.equals(countResults(beforeRun) + countResults(duringRun),
                   checkedResults);
     asyncEnd();
   });
 }