Factor out VisualBench timing code into a helper class

bench/BigPathBench.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "Benchmark.h"
 #include "SkCanvas.h"
 #include "SkPath.h"
-#include "SkString.h"
-
-static void make_path(SkPath& path) {
-    #include "BigPathBench.inc"
-}
+#include "sk_tool_utils.h"
 
 enum Align {
     kLeft_Align,
     kMiddle_Align,
     kRight_Align
 };
 
 const char* gAlignName[] = { "left", "middle", "right" };
 
 // Inspired by crbug.com/455429
@@ skipping 14 matching lines @@
 protected:
     const char* onGetName() override {
         return fName.c_str();
     }
 
     SkIPoint onGetSize() override {
         return SkIPoint::Make(640, 100);
     }
 
     void onDelayedSetup() override {
-        make_path(fPath);
+        sk_tool_utils::make_big_path(fPath);
     }
 
     void onDraw(int loops, SkCanvas* canvas) override {
         SkPaint paint;
         paint.setAntiAlias(true);
         paint.setStyle(SkPaint::kStroke_Style);
         paint.setStrokeWidth(2);
         if (fRound) {
             paint.setStrokeJoin(SkPaint::kRound_Join);
         }
@@ skipping 21 matching lines @@
 };
 
 DEF_BENCH( return new BigPathBench(kLeft_Align,     false); )
 DEF_BENCH( return new BigPathBench(kMiddle_Align,   false); )
 DEF_BENCH( return new BigPathBench(kRight_Align,    false); )
 
 DEF_BENCH( return new BigPathBench(kLeft_Align,     true); )
 DEF_BENCH( return new BigPathBench(kMiddle_Align,   true); )
 DEF_BENCH( return new BigPathBench(kRight_Align,    true); )