Major bench refactoring.
   - Use FLAGS_.
   - Remove outer repeat loop.
   - Tune inner loop automatically.

BUG=skia:1590
R=epoger@google.com, scroggo@google.com

Review URL: https://codereview.chromium.org/23478013

git-svn-id: http://skia.googlecode.com/svn/trunk@11187 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/bench/LineBench.cpp b/bench/LineBench.cpp
index feaae2b..7a54d3c 100644
--- a/bench/LineBench.cpp
+++ b/bench/LineBench.cpp
@@ -22,7 +22,6 @@
     SkString    fName;
     enum {
         PTS = 500,
-        N = SkBENCHLOOP(10)
     };
     SkPoint fPts[PTS];
 
@@ -51,7 +50,7 @@
         paint.setAntiAlias(fDoAA);
         paint.setStrokeWidth(fStrokeWidth);
 
-        for (int i = 0; i < N; i++) {
+        for (int i = 0; i < this->getLoops(); i++) {
             canvas->drawPoints(SkCanvas::kLines_PointMode, PTS, fPts, paint);
         }
     }