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

samplecode/SampleStringArt.cpp

Index: samplecode/SampleStringArt.cpp
diff --git a/samplecode/SampleStringArt.cpp b/samplecode/SampleStringArt.cpp
index 353d4cc957a8fb130ab9b288f06843fd2a930de4..852247878376f8e5c3d08f6cc431d7634a144298 100644
--- a/samplecode/SampleStringArt.cpp
+++ b/samplecode/SampleStringArt.cpp
@@ -19,7 +19,7 @@ public:
 
 protected:
     // overrides from SkEventSink
-    virtual bool onQuery(SkEvent* evt) SK_OVERRIDE {
+    bool onQuery(SkEvent* evt) SK_OVERRIDE {
         if (SampleCode::TitleQ(*evt)) {
             SampleCode::TitleR(evt, "StringArt");
             return true;
@@ -27,7 +27,7 @@ protected:
         return this->INHERITED::onQuery(evt);
     }
 
-    virtual void onDrawContent(SkCanvas* canvas) SK_OVERRIDE {
+    void onDrawContent(SkCanvas* canvas) SK_OVERRIDE {
         SkScalar angle = fAngle*SK_ScalarPI + SkScalarHalf(SK_ScalarPI);
 
         SkPoint center = SkPoint::Make(SkScalarHalf(this->width()), SkScalarHalf(this->height()));
@@ -55,7 +55,7 @@ protected:
         canvas->drawPath(path, paint);
     }
 
-    virtual SkView::Click* onFindClickHandler(SkScalar x, SkScalar y, unsigned) SK_OVERRIDE {
+    SkView::Click* onFindClickHandler(SkScalar x, SkScalar y, unsigned) SK_OVERRIDE {
         fAngle = x/width();
         this->inval(NULL);
         return NULL;