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/bench/MutexBench.cpp b/bench/MutexBench.cpp
index b9d54f1..7fd8fab 100644
--- a/bench/MutexBench.cpp
+++ b/bench/MutexBench.cpp
@@ -9,7 +9,7 @@
 
 class MutexBench : public Benchmark {
 public:
-    bool isSuitableFor(Backend backend) SK_OVERRIDE {
+    bool isSuitableFor(Backend backend) override {
         return backend == kNonRendering_Backend;
     }