Reorganize dartdoc to new package layout.

pkg/dartdoc/lib/src/client/search.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.
 
 /**
  * [SearchText] represent the search field text. The text is viewed in three
  * ways: [text] holds the original search text, used for performing
  * case-sensitive matches, [lowerCase] holds the lower-case search text, used
  * for performing case-insenstive matches, [camelCase] holds a camel-case
  * interpretation of the search text, used to order matches in camel-case.
@@ skipping 198 matching lines @@
     // Sort type alphabetically.
     // TODO(4805): Use [:type.compareToIgnoreCase] when supported.
     result = a.type.toLowerCase().compareTo(b.type.toLowerCase());
     if (result != 0) return result;
   }
 
   // Sort match alphabetically.
   // TODO(4805): Use [:text.compareToIgnoreCase] when supported.
   return a.match.text.toLowerCase().compareTo(b.match.text.toLowerCase());
 }