C++11 override should now be supported by all of {bots,Chrome,Android,Mozilla}

tools/skpdiff/SkPMetric.h

Index: tools/skpdiff/SkPMetric.h
diff --git a/tools/skpdiff/SkPMetric.h b/tools/skpdiff/SkPMetric.h
index 8f7aa6a05b1a4ac06229cde47a0bb9dac1594f7b..0448708980170b36ac25937bebd8de5ef686f187 100644
--- a/tools/skpdiff/SkPMetric.h
+++ b/tools/skpdiff/SkPMetric.h
@@ -18,9 +18,9 @@
  */
 class SkPMetric : public SkImageDiffer {
 public:
-    const char* getName() const SK_OVERRIDE { return "perceptual"; }
+    const char* getName() const override { return "perceptual"; }
     virtual bool diff(SkBitmap* baseline, SkBitmap* test, const BitmapsToCreate& bitmapsToCreate,
-                      Result* result) const SK_OVERRIDE;
+                      Result* result) const override;
 
 private:
     typedef SkImageDiffer INHERITED;