Simplify benchmark internal API.

bench/RTreeBench.cpp

Index: bench/RTreeBench.cpp
diff --git a/bench/RTreeBench.cpp b/bench/RTreeBench.cpp
index 6991b3fb87ae296541251c289648c7c65867e333..b51cc4c6a90b4dc552e9e3fda499bdf4a33c7dee 100644
--- a/bench/RTreeBench.cpp
+++ b/bench/RTreeBench.cpp
@@ -47,9 +47,9 @@ protected:
     virtual const char* onGetName() SK_OVERRIDE {
         return fName.c_str();
     }
-    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+    virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
         SkRandom rand;
-        for (int i = 0; i < this->getLoops(); ++i) {
+        for (int i = 0; i < loops; ++i) {
             for (int j = 0; j < NUM_BUILD_RECTS; ++j) {
                 fTree->insert(reinterpret_cast<void*>(j), fProc(rand, j, NUM_BUILD_RECTS),
                               fBulkLoad);
@@ -111,9 +111,9 @@ protected:
         fTree->flushDeferredInserts();
     }
 
-    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+    virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
         SkRandom rand;
-        for (int i = 0; i < this->getLoops(); ++i) {
+        for (int i = 0; i < loops; ++i) {
             SkTDArray<void*> hits;
             SkIRect query;
             switch(fQuery) {