Merge libv1.

samples/ui_lib/layout/layout.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.
 
-#library('layout.dart');
+library layout;
 
-#import('dart:html');
-#import('dart:math', prefix: 'Math');
+import 'dart:html';
+import 'dart:math' as Math;
 
-#import('../base/base.dart');
-#import('../util/utilslib.dart');
+import '../base/base.dart';
+import '../util/utilslib.dart';
 
-#source('GridLayout.dart');
-#source('GridLayoutParams.dart');
-#source('GridLayoutParser.dart');
-#source('GridTracks.dart');
-#source('SizingFunctions.dart');
-#source('ViewLayout.dart');
+part 'GridLayout.dart';
+part 'GridLayoutParams.dart';
+part 'GridLayoutParser.dart';
+part 'GridTracks.dart';
+part 'SizingFunctions.dart';
+part 'ViewLayout.dart';