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

bench/DeferredSurfaceCopyBench.cpp

Index: bench/DeferredSurfaceCopyBench.cpp
diff --git a/bench/DeferredSurfaceCopyBench.cpp b/bench/DeferredSurfaceCopyBench.cpp
index e1c3e3b50683bf6a69abe028646cc61b72d7057c..e0bf8e7a78e07042aa3c75ba00e2d4e896c43ebc 100644
--- a/bench/DeferredSurfaceCopyBench.cpp
+++ b/bench/DeferredSurfaceCopyBench.cpp
@@ -26,12 +26,12 @@ public:
     }
 
 protected:
-    virtual const char* onGetName() SK_OVERRIDE {
+    const char* onGetName() SK_OVERRIDE {
         return fDiscardableContents ? "DeferredSurfaceCopy_discardable" :
             "DeferredSurfaceCopy_nonDiscardable";
     }
 
-    virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
+    void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
         // The canvas is not actually used for this test except to provide
         // configuration information: gpu, multisampling, size, etc?
         SkImageInfo info = SkImageInfo::MakeN32Premul(kSurfaceWidth, kSurfaceHeight);