sdk files reorganization to make dart2js a proper package

pkg/compiler/lib/src/cps_ir/cps_ir_builder_task.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.
 
 library dart2js.ir_builder_task;
 
 import '../closure.dart' as closurelib;
 import '../closure.dart' hide ClosureScope;
 import '../constants/expressions.dart';
 import '../dart_types.dart';
@@ skipping 13 matching lines @@
 import 'cps_ir_nodes.dart' as ir;
 import 'cps_ir_builder.dart';
 import '../native/native.dart' show NativeBehavior;
 
 // TODO(karlklose): remove.
 import '../js/js.dart' as js show js, Template, Expression, Name;
 import '../ssa/ssa.dart' show TypeMaskFactory;
 import '../types/types.dart' show TypeMask;
 import '../util/util.dart';
 
-import 'package:_internal/compiler/js_lib/shared/embedded_names.dart'
+import 'package:js_runtime/shared/embedded_names.dart'
     show JsBuiltin, JsGetName;
 import '../constants/values.dart';
 
 typedef void IrBuilderCallback(Element element, ir.FunctionDefinition irNode);
 
 /// This task provides the interface to build IR nodes from [ast.Node]s, which
 /// is used from the [CpsFunctionCompiler] to generate code.
 ///
 /// This class is mainly there to correctly measure how long building the IR
 /// takes.
@@ skipping 3207 matching lines @@
   }
 
   processSetStatic(ir.SetStatic node) {
     node.body = replacementFor(node.body);
   }
 
   processContinuation(ir.Continuation node) {
     node.body = replacementFor(node.body);
   }
 }