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/thinrects.cpp b/gm/thinrects.cpp
index 3facaa9..a25176c 100644
--- a/gm/thinrects.cpp
+++ b/gm/thinrects.cpp
@@ -17,15 +17,15 @@
     }
 
 protected:
-    SkString onShortName() SK_OVERRIDE {
+    SkString onShortName() override {
         return SkString("thinrects");
     }
 
-    SkISize onISize() SK_OVERRIDE {
+    SkISize onISize() override {
         return SkISize::Make(240, 320);
     }
 
-    void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+    void onDraw(SkCanvas* canvas) override {
 
         SkPaint white;
         white.setColor(SK_ColorWHITE);