Simplify benchmark internal API.

bench/MorphologyBench.cpp

Index: bench/MorphologyBench.cpp
diff --git a/bench/MorphologyBench.cpp b/bench/MorphologyBench.cpp
index 956cbbee3092e89ab09281496c90d21481ec2755..63171c2c12c435bdf973d9f40b993ce4530e8f09 100644
--- a/bench/MorphologyBench.cpp
+++ b/bench/MorphologyBench.cpp
@@ -50,14 +50,14 @@ protected:
         return fName.c_str();
     }
 
-    virtual void onDraw(SkCanvas* canvas) {
+    virtual void onDraw(const int loops, SkCanvas* canvas) {
         SkPaint paint;
         this->setupPaint(&paint);
 
         paint.setAntiAlias(true);
 
         SkRandom rand;
-        for (int i = 0; i < this->getLoops(); i++) {
+        for (int i = 0; i < loops; i++) {
             SkRect r = SkRect::MakeWH(rand.nextUScalar1() * 400,
                                       rand.nextUScalar1() * 400);
             r.offset(fRadius, fRadius);