Tweaks for using task model in Editor.

pkg/analyzer/lib/src/task/driver.dart

Index: pkg/analyzer/lib/src/task/driver.dart
diff --git a/pkg/analyzer/lib/src/task/driver.dart b/pkg/analyzer/lib/src/task/driver.dart
index ab8ab9dc706e98f47490ba4994842eee9b4446d8..1eaaad1e64c41350dd309548608d2574fa3c7dde 100644
--- a/pkg/analyzer/lib/src/task/driver.dart
+++ b/pkg/analyzer/lib/src/task/driver.dart
@@ -366,7 +366,9 @@ class WorkItem {
     while (builder != null) {
       AnalysisTarget inputTarget = builder.currentTarget;
       ResultDescriptor inputResult = builder.currentResult;
-      inputTargetedResults.add(new TargetedResult(inputTarget, inputResult));
+      if (inputTarget is! AnalysisContextTarget) {
+        inputTargetedResults.add(new TargetedResult(inputTarget, inputResult));
+      }
       CacheEntry inputEntry = context.getCacheEntry(inputTarget);
       CacheState inputState = inputEntry.getState(inputResult);
       if (inputState == CacheState.ERROR) {