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

gm/bigtext.cpp

Index: gm/bigtext.cpp
diff --git a/gm/bigtext.cpp b/gm/bigtext.cpp
index eabad14d0c12d1734973541c444cee8443d070e7..bdb31769ca74c6cfda20ae7e6aa7208582a1e35a 100644
--- a/gm/bigtext.cpp
+++ b/gm/bigtext.cpp
@@ -19,19 +19,19 @@ public:
     BigTextGM() {}
 
 protected:
-    virtual uint32_t onGetFlags() const SK_OVERRIDE {
+    uint32_t onGetFlags() const SK_OVERRIDE {
         return kSkipTiled_Flag;
     }
 
-    virtual SkString onShortName() SK_OVERRIDE {
+    SkString onShortName() SK_OVERRIDE {
         return SkString("bigtext");
     }
 
-    virtual SkISize onISize() SK_OVERRIDE {
+    SkISize onISize() SK_OVERRIDE {
         return SkISize::Make(640, 480);
     }
 
-    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+    void onDraw(SkCanvas* canvas) SK_OVERRIDE {
         SkPaint paint;
         paint.setAntiAlias(true);
         sk_tool_utils::set_portable_typeface(&paint);