C++11 override should now be supported by all of {bots,Chrome,Android,Mozilla}

gm/bitmapshader.cpp

Index: gm/bitmapshader.cpp
diff --git a/gm/bitmapshader.cpp b/gm/bitmapshader.cpp
index ac8bf663c983eb1c811c5da9854eeb89fbdbf242..1d866c601067d4a93443d11d393d79d20d08166f 100644
--- a/gm/bitmapshader.cpp
+++ b/gm/bitmapshader.cpp
@@ -43,7 +43,7 @@ static void adopt_shader(SkPaint* paint, SkShader* shader) {
 class BitmapShaderGM : public GM {
 
 protected:
-    void onOnceBeforeDraw() SK_OVERRIDE {
+    void onOnceBeforeDraw() override {
         this->setBGColor(SK_ColorGRAY);
         draw_bm(&fBitmap);
         draw_mask(&fMask);