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

NOPRESUBMIT=true

BUG=skia:
DOCS_PREVIEW= https://skia.org/?cl=1037793002

Review URL: https://codereview.chromium.org/1037793002
diff --git a/gm/simpleaaclip.cpp b/gm/simpleaaclip.cpp
index 8a18f48..c232a25 100644
--- a/gm/simpleaaclip.cpp
+++ b/gm/simpleaaclip.cpp
@@ -52,7 +52,7 @@
     }
 
 protected:
-    void onOnceBeforeDraw() SK_OVERRIDE {
+    void onOnceBeforeDraw() override {
         // offset the rects a bit so we get anti-aliasing in the rect case
         fBase.set(100.65f,
                   100.65f,