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

tests/compiler/dart2js/js_parser_statements_test.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.
 
 import 'dart:async';
 import 'package:expect/expect.dart';
 import 'package:async_helper/async_helper.dart';
 import 'mock_compiler.dart';
-import 'package:compiler/implementation/js/js.dart' as jsAst;
-import 'package:compiler/implementation/js/js.dart' show js;
+import 'package:compiler/src/js/js.dart' as jsAst;
+import 'package:compiler/src/js/js.dart' show js;
 
 
 Future testStatement(String statement, List arguments, String expect) {
   jsAst.Node node = js.statement(statement, arguments);
   return MockCompiler.create((MockCompiler compiler) {
     String jsText =
         jsAst.prettyPrint(node, compiler, allowVariableMinification: false)
         .getText();
 
     Expect.stringEquals(expect.trim(), jsText.trim());
@@ skipping 131 matching lines @@
 
     // Sequence is printed flattened
     testStatement('x = #', [seq1], 'x = (1, 2, 3);'),
     testStatement('x = (#, #)', [seq1, seq1], 'x = (1, 2, 3, 1, 2, 3);'),
     testStatement('x = #, #', [seq1, seq1], 'x = (1, 2, 3), 1, 2, 3;'),
     testStatement(
         'for (i = 0, j = #, k = 0; ; ++i, ++j, ++k){}', [seq1],
         'for (i = 0, j = (1, 2, 3), k = 0;; ++i, ++j, ++k) {\n}'),
   ]));
 }