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/stlouisarch.cpp b/gm/stlouisarch.cpp
index 06f6078..176fb4b 100644
--- a/gm/stlouisarch.cpp
+++ b/gm/stlouisarch.cpp
@@ -14,13 +14,13 @@
 // this GM tests hairlines which fill nearly the entire render target
 class StLouisArchGM : public GM {
 protected:
-    SkString onShortName() SK_OVERRIDE {
+    SkString onShortName() override {
         return SkString("stlouisarch");
     }
 
-    SkISize onISize() SK_OVERRIDE { return SkISize::Make((int)kWidth, (int)kHeight); }
+    SkISize onISize() override { return SkISize::Make((int)kWidth, (int)kHeight); }
 
-    void onOnceBeforeDraw() SK_OVERRIDE {
+    void onOnceBeforeDraw() override {
         {
             SkPath* bigQuad = &fPaths.push_back();
             bigQuad->moveTo(0, 0);
@@ -66,7 +66,7 @@
         }
     }
 
-    void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+    void onDraw(SkCanvas* canvas) override {
         canvas->save();
         canvas->scale(1, -1);
         canvas->translate(0, -kHeight);