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/colortypexfermode.cpp b/gm/colortypexfermode.cpp
index 1b6e289..bf86565 100644
--- a/gm/colortypexfermode.cpp
+++ b/gm/colortypexfermode.cpp
@@ -18,7 +18,7 @@
 class ColorTypeXfermodeGM : public GM {
     SkBitmap    fBG;
 
-    void onOnceBeforeDraw() SK_OVERRIDE {
+    void onOnceBeforeDraw() override {
         fBG.installPixels(SkImageInfo::Make(2, 2, kARGB_4444_SkColorType,
                                             kOpaque_SkAlphaType), gData, 4);
     }
@@ -54,15 +54,15 @@
     }
 
 protected:
-    virtual SkString onShortName() SK_OVERRIDE {
+    virtual SkString onShortName() override {
         return SkString("colortype_xfermodes");
     }
 
-    virtual SkISize onISize() SK_OVERRIDE {
+    virtual SkISize onISize() override {
         return SkISize::Make(400, 640);
     }
 
-    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+    virtual void onDraw(SkCanvas* canvas) override {
         canvas->translate(SkIntToScalar(10), SkIntToScalar(20));
 
         const struct {