diff --git a/bench/DeferredCanvasBench.cpp b/bench/DeferredCanvasBench.cpp
index a1a3901..98a1e60 100644
--- a/bench/DeferredCanvasBench.cpp
+++ b/bench/DeferredCanvasBench.cpp
@@ -63,6 +63,8 @@
     virtual void flushedDrawCommands() SK_OVERRIDE {fDummy = !fDummy;}
 private:
     bool fDummy;
+
+    typedef SkDeferredCanvas::NotificationClient INHERITED;
 };
 
 // Test that records very simple draw operations.
diff --git a/include/utils/SkDeferredCanvas.h b/include/utils/SkDeferredCanvas.h
index 716ec3e..53bea82 100644
--- a/include/utils/SkDeferredCanvas.h
+++ b/include/utils/SkDeferredCanvas.h
@@ -192,6 +192,8 @@
 public:
     class NotificationClient {
     public:
+        virtual ~NotificationClient() {}
+
         /**
          *  Called before executing one or several draw commands, which means
          *  once per flush when deferred rendering is enabled.
@@ -218,9 +220,6 @@
          *  or completely overwritten by the command currently being recorded.
          */
         virtual void skippedPendingDrawCommands() {}
-
-    private:
-        typedef SkRefCnt INHERITED;
     };
 
 protected:
diff --git a/tests/DeferredCanvasTest.cpp b/tests/DeferredCanvasTest.cpp
index 8a834be..a052c2e 100644
--- a/tests/DeferredCanvasTest.cpp
+++ b/tests/DeferredCanvasTest.cpp
@@ -260,6 +260,9 @@
     int fStorageAllocatedChangedCount;
     int fFlushedDrawCommandsCount;
     int fSkippedPendingDrawCommandsCount;
+
+private:
+    typedef SkDeferredCanvas::NotificationClient INHERITED;
 };
 
 static void TestDeferredCanvasBitmapCaching(skiatest::Reporter* reporter) {