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/gradtext.cpp b/gm/gradtext.cpp
index 87c3b38..eeaff56 100644
--- a/gm/gradtext.cpp
+++ b/gm/gradtext.cpp
@@ -102,11 +102,11 @@
     GradTextGM () {}
 
 protected:
-    SkString onShortName() SK_OVERRIDE {
+    SkString onShortName() override {
         return SkString("gradtext");
     }
 
-    SkISize onISize() SK_OVERRIDE { return SkISize::Make(500, 480); }
+    SkISize onISize() override { return SkISize::Make(500, 480); }
 
     static void draw_text(SkCanvas* canvas, const SkPaint& paint) {
         const char* text = "When in the course of human events";
@@ -127,7 +127,7 @@
         draw_text(canvas, p);
     }
 
-    void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+    void onDraw(SkCanvas* canvas) override {
         SkPaint paint;
         sk_tool_utils::set_portable_typeface(&paint);
         paint.setTextSize(SkIntToScalar(26));