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

bench/WritePixelsBench.cpp

Index: bench/WritePixelsBench.cpp
diff --git a/bench/WritePixelsBench.cpp b/bench/WritePixelsBench.cpp
index 88b2e62ca59c3f31d447058adf853449db760cd6..3353ba2b8d01545b39e949f22fc4bf2c97fd1849 100644
--- a/bench/WritePixelsBench.cpp
+++ b/bench/WritePixelsBench.cpp
@@ -41,11 +41,11 @@ 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 {
         SkISize size = canvas->getDeviceSize();
 
         canvas->clear(0xFFFF0000);