Fix for 'await' highlighting in for-each.

pkg/analysis_server/lib/src/computer/computer_highlights.dart

 // Copyright (c) 2014, 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 computer.highlights;
 
 import 'package:analysis_server/src/protocol.dart' hide Element;
 import 'package:analyzer/src/generated/ast.dart';
 import 'package:analyzer/src/generated/element.dart';
 import 'package:analyzer/src/generated/scanner.dart';
@@ skipping 458 matching lines @@
   }
 
   @override
   Object visitFieldDeclaration(FieldDeclaration node) {
     computer._addRegion_token(node.staticKeyword, HighlightRegionType.BUILT_IN);
     return super.visitFieldDeclaration(node);
   }
 
   @override
   Object visitForEachStatement(ForEachStatement node) {
+    computer._addRegion_token(node.awaitKeyword, HighlightRegionType.BUILT_IN);
     computer._addRegion_token(node.forKeyword, HighlightRegionType.KEYWORD);
     computer._addRegion_token(node.inKeyword, HighlightRegionType.KEYWORD);
     return super.visitForEachStatement(node);
   }
 
   @override
   Object visitForStatement(ForStatement node) {
     computer._addRegion_token(node.forKeyword, HighlightRegionType.KEYWORD);
     return super.visitForStatement(node);
   }
@@ skipping 237 matching lines @@
   void _addRegions_functionBody(FunctionBody node) {
     Token keyword = node.keyword;
     if (keyword != null) {
       Token star = node.star;
       int offset = keyword.offset;
       int end = star != null ? star.end : keyword.end;
       computer._addRegion(offset, end - offset, HighlightRegionType.BUILT_IN);
     }
   }
 }