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/src/core/SkMipMap.h b/src/core/SkMipMap.h
index d403968..e22c0a2 100644
--- a/src/core/SkMipMap.h
+++ b/src/core/SkMipMap.h
@@ -30,7 +30,7 @@
     bool extractLevel(SkScalar scale, Level*) const;
 
 protected:
-    void onDataChange(void* oldData, void* newData) SK_OVERRIDE {
+    void onDataChange(void* oldData, void* newData) override {
         fLevels = (Level*)newData; // could be NULL
     }