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/gpu/gl/debug/GrBufferObj.h b/src/gpu/gl/debug/GrBufferObj.h
index d0bb83d..3c7a30b 100644
--- a/src/gpu/gl/debug/GrBufferObj.h
+++ b/src/gpu/gl/debug/GrBufferObj.h
@@ -55,7 +55,7 @@
     void setUsage(GrGLint usage) { fUsage = usage; }
     GrGLint getUsage() const     { return fUsage; }
 
-    void deleteAction() SK_OVERRIDE;
+    void deleteAction() override;
 
 protected:
 private: