Move LocalDeclarationVisitor for use by contributors that will be moved to analyzer_plugin

pkg/analyzer/lib/dart/analysis/results.dart

Index: pkg/analyzer/lib/dart/analysis/results.dart
diff --git a/pkg/analyzer/lib/dart/analysis/results.dart b/pkg/analyzer/lib/dart/analysis/results.dart
index d0e7296acadc58990f113421d3d497bf97f2f9a0..8954f4f5d1e1cdb465e6a6d3220d7b9982edd17c 100644
--- a/pkg/analyzer/lib/dart/analysis/results.dart
+++ b/pkg/analyzer/lib/dart/analysis/results.dart
@@ -5,6 +5,7 @@
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/error/error.dart';
+import 'package:analyzer/src/generated/resolver.dart';
 import 'package:analyzer/src/generated/source.dart';
 
 /**
@@ -86,6 +87,16 @@ abstract class ResolveResult implements AnalysisResultWithErrors {
   String get content;
 
   /**
+   * The element representing the library containing the compilation [unit].
+   */
+  LibraryElement get libraryElement;
+
+  /**
+   * The type provider used when resolving the compilation [unit].
+   */
+  TypeProvider get typeProvider;
+
+  /**
    * The fully resolved compilation unit for the [content].
    */
   CompilationUnit get unit;