Rollback r42232.

pkg/analysis_server/lib/src/services/completion/dart_completion_manager.dart

Index: pkg/analysis_server/lib/src/services/completion/dart_completion_manager.dart
diff --git a/pkg/analysis_server/lib/src/services/completion/dart_completion_manager.dart b/pkg/analysis_server/lib/src/services/completion/dart_completion_manager.dart
index 9b73818418f68d5f3d820cf3c7a80348f5a41697..e2c9cdcbf525a25f5c5e87147931e61e3f6897fc 100644
--- a/pkg/analysis_server/lib/src/services/completion/dart_completion_manager.dart
+++ b/pkg/analysis_server/lib/src/services/completion/dart_completion_manager.dart
@@ -75,14 +75,14 @@ class DartCompletionManager extends CompletionManager {
         new DartCompletionCache(context, source));
   }
 
-//  @override
-//  void computeCache() {
-//    waitForAnalysis().then((CompilationUnit unit) {
-//      if (unit != null && !cache.isImportInfoCached(unit)) {
-//        cache.computeImportInfo(unit, searchEngine);
-//      }
-//    });
-//  }
+  @override
+  void computeCache() {
+    waitForAnalysis().then((CompilationUnit unit) {
+      if (unit != null && !cache.isImportInfoCached(unit)) {
+        cache.computeImportInfo(unit, searchEngine);
+      }
+    });
+  }
 
   /**
    * Compute suggestions based upon cached information only