Additional clean-up after moving to the new task model; a breaking change needed to allow a bug to …

pkg/analyzer/lib/instrumentation/instrumentation.dart

Index: pkg/analyzer/lib/instrumentation/instrumentation.dart
diff --git a/pkg/analyzer/lib/instrumentation/instrumentation.dart b/pkg/analyzer/lib/instrumentation/instrumentation.dart
index 8b36303152faec6ee9b67903a49087012a3cb15a..d23711da02da40a36113c35c99dfe6da054405ff 100644
--- a/pkg/analyzer/lib/instrumentation/instrumentation.dart
+++ b/pkg/analyzer/lib/instrumentation/instrumentation.dart
@@ -104,9 +104,7 @@ class InstrumentationService {
    * Log that the given analysis [task] is being performed in the given
    * [context].
    */
-  void logAnalysisTask(String context, dynamic task) {
-    // TODO(brianwilkerson) When the old task model is removed, change the
-    // parameter type to AnalysisTask.
+  void logAnalysisTask(String context, AnalysisTask task) {
     if (_instrumentationServer != null) {
       String description =
           (task is AnalysisTask) ? task.description : task.toString();