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/CmapBench.cpp b/bench/CmapBench.cpp
index 1d2a5ee..fcf40be 100644
--- a/bench/CmapBench.cpp
+++ b/bench/CmapBench.cpp
@@ -85,8 +85,8 @@
         return fName.c_str();
     }
 
-    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
-        fProc(this->getLoops(), fPaint, fText, sizeof(fText), NGLYPHS);
+    virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
+        fProc(loops, fPaint, fText, sizeof(fText), NGLYPHS);
     }
 
 private: