Run dartfmt on dart2js codebase.

pkg/analyzer/lib/src/dart/sdk/patch.dart

 // Copyright (c) 2016, 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 analyzer.src.dart.sdk.patch;
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
 import 'package:analyzer/error/listener.dart';
 import 'package:analyzer/file_system/file_system.dart';
@@ skipping 33 matching lines @@
         throw new ArgumentError(
             'The URI of the unit to patch must have the "dart" scheme: $uri');
       }
       List<String> uriSegments = uri.pathSegments;
       String libraryName = uriSegments.first;
       libraryUriStr = 'dart:$libraryName';
       isLibraryDefiningUnit = uriSegments.length == 1;
       _allowNewPublicNames = libraryName == '_internal';
     }
     // Prepare the patch files to apply.
-    List<String> patchPaths = allPatchPaths[libraryUriStr] ?? const <String> [];
+    List<String> patchPaths = allPatchPaths[libraryUriStr] ?? const <String>[];
 
     for (String path in patchPaths) {
       File patchFile = resourceProvider.getFile(path);
       if (!patchFile.exists) {
         throw new ArgumentError(
             'The patch file ${patchFile.path} for $source does not exist.');
       }
       Source patchSource = patchFile.createSource();
       CompilationUnit patchUnit = parse(patchSource, strongMode, errorListener);
 
@@ skipping 394 matching lines @@
   }
 
   /**
    * Replace tokens of the [oldNode] with tokens of the [newNode].
    */
   static void _replaceNodeTokens(AstNode oldNode, AstNode newNode) {
     oldNode.beginToken.previous.setNext(newNode.beginToken);
     newNode.endToken.setNext(oldNode.endToken.next);
   }
 }