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

gm/shadertext.cpp

Index: gm/shadertext.cpp
diff --git a/gm/shadertext.cpp b/gm/shadertext.cpp
index 30b15735d7f3bdc0ea2c1395c23caed87dc5fb11..f51aba288a503d9b9a1e2ab6cf91cf35a956e4a6 100644
--- a/gm/shadertext.cpp
+++ b/gm/shadertext.cpp
@@ -91,7 +91,7 @@ public:
     }
 
 protected:
-    virtual uint32_t onGetFlags() const SK_OVERRIDE {
+    uint32_t onGetFlags() const SK_OVERRIDE {
         return kSkipTiled_Flag;
     }
 
@@ -101,7 +101,7 @@ protected:
 
     SkISize onISize() SK_OVERRIDE { return SkISize::Make(1450, 500); }
 
-    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+    void onDraw(SkCanvas* canvas) SK_OVERRIDE {
         const char text[] = "Shaded Text";
         const int textLen = SK_ARRAY_COUNT(text) - 1;
         const int pointSize = 36;