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

bench/LineBench.cpp

Index: bench/LineBench.cpp
diff --git a/bench/LineBench.cpp b/bench/LineBench.cpp
index bb6215b03fda7ab4f67bbd5ae93e2733b5727e50..e5065d2dabd925d33178d03ee2d7432400dc4eed 100644
--- a/bench/LineBench.cpp
+++ b/bench/LineBench.cpp
@@ -38,11 +38,11 @@ public:
     }
 
 protected:
-    virtual const char* onGetName() SK_OVERRIDE {
+    const char* onGetName() SK_OVERRIDE {
         return fName.c_str();
     }
 
-    virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
+    void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
         SkPaint paint;
         this->setupPaint(&paint);