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

samplecode/SampleSlides.cpp

Index: samplecode/SampleSlides.cpp
diff --git a/samplecode/SampleSlides.cpp b/samplecode/SampleSlides.cpp
index 603714a120786867393221ff0942064c55fd9747..e115235ffa3e5b99de901466be0dca7164bceb49 100644
--- a/samplecode/SampleSlides.cpp
+++ b/samplecode/SampleSlides.cpp
@@ -697,7 +697,7 @@ 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, "Slides");
             return true;
@@ -705,12 +705,12 @@ protected:
         return this->INHERITED::onQuery(evt);
     }
 
-    virtual void onDrawContent(SkCanvas* canvas) SK_OVERRIDE {
+    void onDrawContent(SkCanvas* canvas) SK_OVERRIDE {
         this->init();
         gProc[fIndex](canvas);
     }
 
-    virtual SkView::Click* onFindClickHandler(SkScalar x, SkScalar y, unsigned) SK_OVERRIDE {
+    SkView::Click* onFindClickHandler(SkScalar x, SkScalar y, unsigned) SK_OVERRIDE {
         this->init();
         fIndex = (fIndex + 1) % SK_ARRAY_COUNT(gProc);
         this->inval(NULL);