Simplify benchmark internal API.

I'm not quite sure why I wrote such a convoluted API with setLoops()/getLoops().
This replaces it with a loops argument passed to onDraw().

This CL is largely mechanical translation from the old API to the new one.
MathBench used this->getLoops() outside onDraw(), which seems incorrect.  I
fixed it.

BUG=
R=djsollen@google.com

Author: mtklein@google.com

Review URL: https://codereview.chromium.org/99893003

git-svn-id: http://skia.googlecode.com/svn/trunk@12466 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/bench/BlurRoundRectBench.cpp b/bench/BlurRoundRectBench.cpp
index 814e8f4..2c8ea95 100644
--- a/bench/BlurRoundRectBench.cpp
+++ b/bench/BlurRoundRectBench.cpp
@@ -39,7 +39,7 @@
                               SkScalarCeilToInt(fRRect.rect().height()));
     }
 
-    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+    virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
         SkLayerDrawLooper* looper = new SkLayerDrawLooper;
         {
             SkLayerDrawLooper::LayerInfo info;
@@ -72,7 +72,7 @@
         loopedPaint.setAntiAlias(true);
         loopedPaint.setColor(SK_ColorCYAN);
 
-        for (int i = 0; i < this->getLoops(); i++) {
+        for (int i = 0; i < loops; i++) {
             canvas->drawRect(fRRect.rect(), dullPaint);
             canvas->drawRRect(fRRect, loopedPaint);
         }