Fix a stray -Winconsistent-missing-override warning.

TBR=

BUG=skia:

Review URL: https://codereview.chromium.org/1261043002
diff --git a/src/animator/SkDump.h b/src/animator/SkDump.h
index bedd533..bcf19fd 100644
--- a/src/animator/SkDump.h
+++ b/src/animator/SkDump.h
@@ -32,9 +32,9 @@
     SkBool posts;
     SkString script;
 #else
-    virtual bool enable(SkAnimateMaker & );
-    virtual bool hasEnable() const;
-    virtual bool setProperty(int index, SkScriptValue& );
+    bool enable(SkAnimateMaker & ) override;
+    bool hasEnable() const override;
+    bool setProperty(int index, SkScriptValue& ) override;
 #endif
 };