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/FontScalerBench.cpp b/bench/FontScalerBench.cpp
index d4a9674..6ef0703 100644
--- a/bench/FontScalerBench.cpp
+++ b/bench/FontScalerBench.cpp
@@ -27,7 +27,7 @@
 
 protected:
     virtual const char* onGetName() { return fName.c_str(); }
-    virtual void onDraw(SkCanvas* canvas) {
+    virtual void onDraw(const int loops, SkCanvas* canvas) {
         SkPaint paint;
         this->setupPaint(&paint);
         paint.setLCDRenderText(fDoLCD);
@@ -35,7 +35,7 @@
         bool prev = gSkSuppressFontCachePurgeSpew;
         gSkSuppressFontCachePurgeSpew = true;
 
-        for (int i = 0; i < this->getLoops(); i++) {
+        for (int i = 0; i < loops; i++) {
             // this is critical - we want to time the creation process, so we
             // explicitly flush our cache before each run
             SkGraphics::PurgeFontCache();