Format analyzer, analysis_server, analyzer_plugin, front_end and kernel with the latest dartfmt.

pkg/analyzer_plugin/test/support/abstract_context.dart

 // Copyright (c) 2017, 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.
 
 import 'dart:async';
 
 import 'package:analyzer/dart/analysis/session.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/visitor.dart';
@@ skipping 50 matching lines @@
   /**
    * Return `true` if strong mode should be enabled for this test.
    */
   bool get enableStrongMode => false;
 
   /**
    * Return the analysis session associated with the driver.
    */
   AnalysisSession get session => driver.currentSession;
 
-  Source addMetaPackageSource() => addPackageSource(
-      'meta',
-      'meta.dart',
-      r'''
+  Source addMetaPackageSource() => addPackageSource('meta', 'meta.dart', r'''
 library meta;
 
 const Required required = const Required();
 
 class Required {
   final String reason;
   const Required([this.reason]);
 }
 ''');
 
@@ skipping 103 matching lines @@
   final _ElementVisitorFunction function;
 
   _ElementVisitorFunctionWrapper(this.function);
 
   @override
   visitElement(Element element) {
     function(element);
     super.visitElement(element);
   }
 }