Initial version of limiting invalidation.

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

Index: pkg/analyzer/lib/src/generated/engine.dart
diff --git a/pkg/analyzer/lib/src/generated/engine.dart b/pkg/analyzer/lib/src/generated/engine.dart
index 88bae3294ce411f4b8c2f42bd19ecb1e54b274d6..d8ecdccd29f7322623f33cfb4d220d2485a4e249 100644
--- a/pkg/analyzer/lib/src/generated/engine.dart
+++ b/pkg/analyzer/lib/src/generated/engine.dart
@@ -5810,6 +5810,12 @@ class AnalysisEngine {
   bool useTaskModel = false;
 
   /**
+   * A flag indicating whether the task model should attempt to limit
+   * invalidation after a change.
+   */
+  bool limitInvalidationInTaskModel = false;
+
+  /**
    * The task manager used to manage the tasks used to analyze code.
    */
   TaskManager _taskManager;