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

tests/compiler/dart2js/cpa_inference_test.dart

 // Copyright (c) 2012, 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 'package:compiler/src/types/types.dart';
-import 'package:compiler/src/inferrer/concrete_types_inferrer.dart';
+import 'package:compiler/implementation/types/types.dart';
+import 'package:compiler/implementation/inferrer/concrete_types_inferrer.dart';
 
 import "compiler_helper.dart";
 import "type_mask_test_helper.dart";
 
 /**
  * Finds the node corresponding to the last occurence of the substring
  * [: identifier; :] in the program represented by the visited AST.
  */
 class VariableFinderVisitor extends Visitor {
   final String identifier;
@@ skipping 410 matching lines @@
       """;
   return analyze(source).then((result) {
     result.checkNodeHasType('foo', [result.nullType, result.int,
                                     result.string]);
   });
 }
 
 testToplevelVariable3() {
   final String source = r"""
       var top = "a";
-
+      
       f() => top;
 
       main() {
         var foo = f();
         var bar = top;
         top = 42;
         var baz = top;
         foo; bar; baz;
       }
       """;
@@ skipping 220 matching lines @@
       """;
   return analyze(source).then((result) {
     result.checkNodeHasType('x', [result.int, result.string]);
   });
 }
 
 testToplevelGetters() {
   final String source = """
       int _x = 42;
       get x => _x;
-
+ 
       f() => x;
 
       main() {
         var foo = f();
         var bar = x;
         _x = "a";
         var baz = x;
         foo; bar; baz;
       }
       """;
@@ skipping 41 matching lines @@
                              [result.int,       // new A(..., 42)
                               result.bool,      // a.y = true
                               result.double]);  // dynamic.y = 3.14
   });
 }
 
 testToplevelSetters() {
   final String source = """
       int _x = 42;
       set x(y) => _x = y;
-
+ 
       f(y) { x = y; }
 
       main() {
         var foo = _x;
         x = "a";
         var bar = _x;
         f(true);
         var baz = _x;
         foo; bar; baz;
       }
@@ skipping 993 matching lines @@
       }
       class B {
         final foo = "abc";
       }
       class C {
         final foo = true;
       }
       main() {
         // We make sure that x doesn't have type dynamic by adding C to the
         // set of seen classes and by checking that a's type doesn't contain
-        // bool.
+        // bool. 
         new C();
 
         var a;
         f(x) {
           a = x.foo;
         }
         f(new A());
         f(new B());
         a; f;
       }
@@ skipping 367 matching lines @@
     testClosures10,
     testClosures11,
     testClosures12,
     testRefinement,
     testDefaultArguments,
     testSuperConstructorCall,
     testSuperConstructorCall2,
     testSuperConstructorCall3,
   ], (f) => f()));
 }