Adapt streams for additional stackTrace argument.

sdk/lib/_internal/dartdoc/lib/dartdoc.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.
 
 /**
  * To generate docs for a library, run this script with the path to an
  * entrypoint .dart file, like:
  *
  *     $ dart dartdoc.dart foo.dart
  *
@@ skipping 90 matching lines @@
           final name = path.basename(entity.path);
           // TODO(rnystrom): Hackish. Ignore 'hidden' files like .DS_Store.
           if (name.startsWith('.')) return;
 
           File fromFile = entity;
           File toFile = new File(path.join(to, name));
           futureList.add(fromFile.openRead().pipe(toFile.openWrite()));
         }
       },
       onDone: () => Future.wait(futureList).then((_) => completer.complete()),
-      onError: (e) => completer.completeError(e));
+      onError: completer.completeError);
   return completer.future;
 }
 
 /**
  * Compiles the dartdoc client-side code to JavaScript using Dart2js.
  */
 Future compileScript(int mode, String outputDir, String libPath, String tmpPath) {
   print('Compiling client JavaScript...');
   var clientScript = (mode == MODE_STATIC) ?  'static' : 'live-nav';
   var dartdocLibPath = path.join(libPath, 'lib', '_internal', 'dartdoc', 'lib');
@@ skipping 2190 matching lines @@
    return '''
         <div class="mdn">
         $mdnComment
         <div class="mdn-note"><a href="$mdnUrl">from MDN</a></div>
         </div>
         ''';
   }
 
   String toString() => mdnComment;
 }