Remove unused NormalizeBench::fUsePortable field.

bench/MathBench.cpp

 #include "SkBenchmark.h"
 #include "SkColorPriv.h"
 #include "SkMatrix.h"
 #include "SkRandom.h"
 #include "SkString.h"
 #include "SkPaint.h"
 
 static float sk_fsel(float pred, float result_ge, float result_lt) {
     return pred >= 0 ? result_ge : result_lt;
 }
@@ skipping 421 matching lines @@
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
 class NormalizeBench : public SkBenchmark {
     enum {
         ARRAY = SkBENCHLOOP(1000),
         LOOP = SkBENCHLOOP(1000),
     };
     SkVector fVec[ARRAY];
-    bool fUsePortable;
 
 public:
-    NormalizeBench(void* param, bool usePortable)
-    : INHERITED(param)
-    , fUsePortable(usePortable) {
+    NormalizeBench(void* param)
+    : INHERITED(param) {
 
         SkRandom rand;
         for (int i = 0; i < ARRAY; ++i) {
             fVec[i].set(rand.nextSScalar1(), rand.nextSScalar1());
         }
 
         fName = "point_normalize";
         fIsRendering = false;
     }
 
@@ skipping 37 matching lines @@
 DEF_BENCH( return new IsFiniteBench(p, 3); )
 DEF_BENCH( return new IsFiniteBench(p, 4); )
 DEF_BENCH( return new IsFiniteBench(p, 5); )
 
 DEF_BENCH( return new FloorBench(p, false); )
 DEF_BENCH( return new FloorBench(p, true); )
 
 DEF_BENCH( return new CLZBench(p, false); )
 DEF_BENCH( return new CLZBench(p, true); )
 
-DEF_BENCH( return new NormalizeBench(p, false); )
+DEF_BENCH( return new NormalizeBench(p); )