Move client/{base, observable, layout, touch, util, view} to samples/ui_lib .

client/layout/layout.dart

Index: client/layout/layout.dart
===================================================================
--- client/layout/layout.dart	(revision 4144)
+++ client/layout/layout.dart	(working copy)
@@ -1,16 +0,0 @@
-// Copyright (c) 2011, 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');
-
-#import('dart:html');
-#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');