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/FontCacheBench.cpp b/bench/FontCacheBench.cpp
index a52fd42..a3c0672 100644
--- a/bench/FontCacheBench.cpp
+++ b/bench/FontCacheBench.cpp
@@ -32,7 +32,7 @@
         return "fontcache";
     }
 
-    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+    virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
         SkPaint paint;
         this->setupPaint(&paint);
         paint.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
@@ -40,7 +40,7 @@
         const uint16_t* array = gUniqueGlyphIDs;
         while (*array != gUniqueGlyphIDs_Sentinel) {
             int count = count_glyphs(array);
-            for (int i = 0; i < this->getLoops(); ++i) {
+            for (int i = 0; i < loops; ++i) {
                 paint.measureText(array, count * sizeof(uint16_t));
             }
             array += count + 1;    // skip the sentinel
@@ -119,7 +119,7 @@
         return "fontefficiency";
     }
 
-    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+    virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
         static bool gDone;
         if (gDone) {
             return;