Implement instance member inference

pkg/analyzer/lib/src/generated/element.dart

Index: pkg/analyzer/lib/src/generated/element.dart
diff --git a/pkg/analyzer/lib/src/generated/element.dart b/pkg/analyzer/lib/src/generated/element.dart
index 386eaab7a8ca010840117518793d95cb5e3dfb5f..596647c86f77b85941c35c9d5726408ae3ab643b 100644
--- a/pkg/analyzer/lib/src/generated/element.dart
+++ b/pkg/analyzer/lib/src/generated/element.dart
@@ -553,6 +553,12 @@ class ClassElementImpl extends ElementImpl implements ClassElement {
   SourceRange withClauseRange;
 
   /**
+   * A flag indicating whether the types associated with the instance members of
+   * this class have been inferred.
+   */
+  bool hasBeenInferred = false;
+
+  /**
    * Initialize a newly created class element to have the given [name] at the
    * given [offset] in the file that contains the declaration of this element.
    */