Fix couple problems with in-body incremental resolution.

pkg/analyzer/lib/src/generated/incremental_resolver.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 analyzer.src.generated.incremental_resolver;
 
 import 'dart:collection';
 import 'dart:math' as math;
 
 import 'package:analyzer/dart/ast/ast.dart';
@@ skipping 59 matching lines @@
     // A body change delta should never leak outside its source.
     // It can cause invalidation of results (e.g. hints) in other sources,
     // but only when a result in the updated source is INVALIDATE_NO_DELTA.
     if (target.source != source) {
       return DeltaResult.STOP;
     }
     // don't invalidate results of standard Dart tasks
     bool isByTask(TaskDescriptor taskDescriptor) {
       return taskDescriptor.results.contains(descriptor);
     }
+
     if (descriptor == CONTENT) {
       return DeltaResult.KEEP_CONTINUE;
     }
     if (target is LibrarySpecificUnit && target.unit != source) {
       if (isByTask(GatherUsedLocalElementsTask.DESCRIPTOR) ||
           isByTask(GatherUsedImportedElementsTask.DESCRIPTOR)) {
         return DeltaResult.KEEP_CONTINUE;
       }
     }
     if (isByTask(BuildCompilationUnitElementTask.DESCRIPTOR) ||
@@ skipping 712 matching lines @@
       AstNode parent = newComment.parent;
       if (parent is AnnotatedNode) {
         setElementDocumentationForVariables(VariableDeclarationList list) {
           for (VariableDeclaration variable in list.variables) {
             Element variableElement = variable.element;
             if (variableElement is ElementImpl) {
               setElementDocumentationComment(variableElement, parent);
             }
           }
         }
+
         Element parentElement = ElementLocator.locate(newComment.parent);
         if (parentElement is ElementImpl) {
           setElementDocumentationComment(parentElement, parent);
         } else if (parent is FieldDeclaration) {
           setElementDocumentationForVariables(parent.fields);
         } else if (parent is TopLevelVariableDeclaration) {
           setElementDocumentationForVariables(parent.variables);
         }
       }
     }
@@ skipping 498 matching lines @@
   @override
   String toString() => name;
 }
 
 class _TokenPair {
   final _TokenDifferenceKind kind;
   final Token oldToken;
   final Token newToken;
   _TokenPair(this.kind, this.oldToken, this.newToken);
 }