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/GrRectanizer_pow2.h b/src/gpu/GrRectanizer_pow2.h
index 59ef864..451589d 100644
--- a/src/gpu/GrRectanizer_pow2.h
+++ b/src/gpu/GrRectanizer_pow2.h
@@ -24,15 +24,15 @@
 
     virtual ~GrRectanizerPow2() { }
 
-    void reset() SK_OVERRIDE {
+    void reset() override {
         fNextStripY = 0;
         fAreaSoFar = 0;
         sk_bzero(fRows, sizeof(fRows));
     }
 
-    bool addRect(int w, int h, SkIPoint16* loc) SK_OVERRIDE;
+    bool addRect(int w, int h, SkIPoint16* loc) override;
 
-    float percentFull() const SK_OVERRIDE {
+    float percentFull() const override {
         return fAreaSoFar / ((float)this->width() * this->height());
     }