Cleanup: More override fixes - another round.

BUG=skia:3075
TEST=ninja -C out/Debug
TBR=reed@google.com

Review URL: https://codereview.chromium.org/831113002
diff --git a/bench/RefCntBench.cpp b/bench/RefCntBench.cpp
index f846b1a..d440d99 100644
--- a/bench/RefCntBench.cpp
+++ b/bench/RefCntBench.cpp
@@ -191,11 +191,11 @@
     }
 
 protected:
-    virtual const char* onGetName() {
+    virtual const char* onGetName() SK_OVERRIDE {
         return "ref_cnt_heap_weak";
     }
 
-    virtual void onDraw(const int loops, SkCanvas*) {
+    virtual void onDraw(const int loops, SkCanvas*) SK_OVERRIDE {
         char memory[sizeof(PlacedWeakRefCnt)];
         for (int i = 0; i < loops; ++i) {
             PlacedWeakRefCnt* ref = new (memory) PlacedWeakRefCnt();
@@ -218,11 +218,11 @@
     }
 
 protected:
-    virtual const char* onGetName() {
+    virtual const char* onGetName() SK_OVERRIDE {
         return "ref_cnt_new_weak";
     }
 
-    virtual void onDraw(const int loops, SkCanvas*) {
+    virtual void onDraw(const int loops, SkCanvas*) SK_OVERRIDE {
         for (int i = 0; i < loops; ++i) {
             SkWeakRefCnt* ref = new SkWeakRefCnt();
             for (int j = 0; j < M; ++j) {