Fix up all the easy virtual ... SK_OVERRIDE cases.

src/animator/SkDisplayMath.h

Index: src/animator/SkDisplayMath.h
diff --git a/src/animator/SkDisplayMath.h b/src/animator/SkDisplayMath.h
index 301e0f2e4b727fb73bb7603767f0ff1dc99135f2..05c1fe46b7462e59cafcdada250e0b8651ef4904 100644
--- a/src/animator/SkDisplayMath.h
+++ b/src/animator/SkDisplayMath.h
@@ -19,8 +19,8 @@ class SkDisplayMath : public SkDisplayable {
     virtual void executeFunction(SkDisplayable* , int index,
         SkTDArray<SkScriptValue>& parameters, SkDisplayTypes type,
         SkScriptValue* ) SK_OVERRIDE;
-    virtual const SkFunctionParamType* getFunctionsParameters() SK_OVERRIDE;
-    virtual bool getProperty(int index, SkScriptValue* value) const SK_OVERRIDE;
+    const SkFunctionParamType* getFunctionsParameters() SK_OVERRIDE;
+    bool getProperty(int index, SkScriptValue* value) const SK_OVERRIDE;
 private:
     mutable SkRandom fRandom;
     static const SkScalar gConstants[];