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/DisplacementBench.cpp b/bench/DisplacementBench.cpp
index 72d482e..77ac305 100644
--- a/bench/DisplacementBench.cpp
+++ b/bench/DisplacementBench.cpp
@@ -99,7 +99,7 @@
         return this->isSmall() ? "displacement_zero_small" : "displacement_zero_large";
     }
 
-    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+    virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
         SkPaint paint;
         SkAutoTUnref<SkImageFilter> displ(SkNEW_ARGS(SkBitmapSource, (fCheckerboard)));
         // No displacement effect
@@ -107,7 +107,7 @@
             (SkDisplacementMapEffect::kR_ChannelSelectorType,
              SkDisplacementMapEffect::kG_ChannelSelectorType, 0.0f, displ)))->unref();
 
-        for (int i = 0; i < this->getLoops(); i++) {
+        for (int i = 0; i < loops; i++) {
             this->drawClippedBitmap(canvas, 0, 0, paint);
         }
     }
@@ -126,14 +126,14 @@
         return isSmall() ? "displacement_alpha_small" : "displacement_alpha_large";
     }
 
-    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+    virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
         SkPaint paint;
         SkAutoTUnref<SkImageFilter> displ(SkNEW_ARGS(SkBitmapSource, (fCheckerboard)));
         // Displacement, with 1 alpha component (which isn't pre-multiplied)
         paint.setImageFilter(SkNEW_ARGS(SkDisplacementMapEffect,
             (SkDisplacementMapEffect::kB_ChannelSelectorType,
              SkDisplacementMapEffect::kA_ChannelSelectorType, 16.0f, displ)))->unref();
-        for (int i = 0; i < this->getLoops(); i++) {
+        for (int i = 0; i < loops; i++) {
             drawClippedBitmap(canvas, 100, 0, paint);
         }
     }
@@ -152,14 +152,14 @@
         return isSmall() ? "displacement_full_small" : "displacement_full_large";
     }
 
-    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+    virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
         SkPaint paint;
         SkAutoTUnref<SkImageFilter> displ(SkNEW_ARGS(SkBitmapSource, (fCheckerboard)));
         // Displacement, with 2 non-alpha components
         paint.setImageFilter(SkNEW_ARGS(SkDisplacementMapEffect,
             (SkDisplacementMapEffect::kR_ChannelSelectorType,
              SkDisplacementMapEffect::kB_ChannelSelectorType, 32.0f, displ)))->unref();
-        for (int i = 0; i < this->getLoops(); ++i) {
+        for (int i = 0; i < loops; ++i) {
             this->drawClippedBitmap(canvas, 200, 0, paint);
         }
     }