Simplify benchmark internal API.

bench/RepeatTileBench.cpp

Index: bench/RepeatTileBench.cpp
diff --git a/bench/RepeatTileBench.cpp b/bench/RepeatTileBench.cpp
index 957ec2a83e28dd02c06d9ec65a94edcedf4d7eaf..fcbffb2a10be5b0ca0ab83f0b26a5cde085a5e90 100644
--- a/bench/RepeatTileBench.cpp
+++ b/bench/RepeatTileBench.cpp
@@ -133,11 +133,11 @@ protected:
     }
 
 
-    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+    virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
         SkPaint paint(fPaint);
         this->setupPaint(&paint);
 
-        for (int i = 0; i < this->getLoops(); i++) {
+        for (int i = 0; i < loops; i++) {
             canvas->drawPaint(paint);
         }
     }