Reorganize dartdoc to new package layout.

pkg/dartdoc/lib/src/mirrors/dart2js_mirror.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('mirrors.dart2js');
 
-#import('../../../lib/compiler/compiler.dart', prefix: 'diagnostics');
-#import('../../../lib/compiler/implementation/elements/elements.dart');
-#import('../../../lib/compiler/implementation/apiimpl.dart', prefix: 'api');
-#import('../../../lib/compiler/implementation/scanner/scannerlib.dart');
-#import('../../../lib/compiler/implementation/leg.dart');
-#import('../../../lib/compiler/implementation/filenames.dart');
-#import('../../../lib/compiler/implementation/source_file.dart');
-#import('../../../lib/compiler/implementation/tree/tree.dart');
-#import('../../../lib/compiler/implementation/util/util.dart');
-#import('../../../lib/compiler/implementation/util/uri_extras.dart');
-#import('../../../lib/compiler/implementation/dart2js.dart');
-#import('mirrors.dart');
-#import('util.dart');
 #import('dart:io');
 #import('dart:uri');
 
+#import('../../../../../lib/compiler/compiler.dart', prefix: 'diagnostics');
+#import('../../../../../lib/compiler/implementation/elements/elements.dart');
+#import('../../../../../lib/compiler/implementation/apiimpl.dart', prefix: 'api');
+#import('../../../../../lib/compiler/implementation/scanner/scannerlib.dart');
+#import('../../../../../lib/compiler/implementation/leg.dart');
+#import('../../../../../lib/compiler/implementation/filenames.dart');
+#import('../../../../../lib/compiler/implementation/source_file.dart');
+#import('../../../../../lib/compiler/implementation/tree/tree.dart');
+#import('../../../../../lib/compiler/implementation/util/util.dart');
+#import('../../../../../lib/compiler/implementation/util/uri_extras.dart');
+#import('../../../../../lib/compiler/implementation/dart2js.dart');
+
+// TODO(rnystrom): Use "package:" URL (#4968).
+#import('../../mirrors.dart');
+#import('util.dart');
 
 //------------------------------------------------------------------------------
 // Utility types and functions for the dart2js mirror system
 //------------------------------------------------------------------------------
 
 bool _isPrivate(String name) {
   return name.startsWith('_');
 }
 
 List<ParameterMirror> _parametersFromFunctionSignature(
@@ skipping 1350 matching lines @@
     if (node !== null) {
       var span = system.compiler.spanFromNode(node, script.uri);
       return new Dart2JsLocation(script, span);
     } else {
       var span = system.compiler.spanFromElement(_variable);
       return new Dart2JsLocation(script, span);
     }
   }
 }