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/gradientDirtyLaundry.cpp b/gm/gradientDirtyLaundry.cpp
index 8c27b8f..ed5ad51 100644
--- a/gm/gradientDirtyLaundry.cpp
+++ b/gm/gradientDirtyLaundry.cpp
@@ -70,10 +70,10 @@
     }
 
 protected:
-    SkString onShortName() SK_OVERRIDE { return SkString("gradient_dirty_laundry"); }
-    SkISize onISize() SK_OVERRIDE { return SkISize::Make(640, 615); }
+    SkString onShortName() override { return SkString("gradient_dirty_laundry"); }
+    SkISize onISize() override { return SkISize::Make(640, 615); }
 
-    void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+    void onDraw(SkCanvas* canvas) override {
         SkPoint pts[2] = { { 0, 0 },
                            { SkIntToScalar(100), SkIntToScalar(100) }
         };