Factor out VisualBench timing code into a helper class

tools/sk_tool_utils.h

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef sk_tool_utils_DEFINED
 #define sk_tool_utils_DEFINED
 
 #include "SkColor.h"
 #include "SkImageEncoder.h"
 #include "SkImageInfo.h"
 #include "SkPixelSerializer.h"
 #include "SkTypeface.h"
 
 class SkBitmap;
 class SkCanvas;
 class SkPaint;
+class SkPath;
 class SkShader;
 class SkTestFont;
 class SkTextBlobBuilder;
 
 namespace sk_tool_utils {
 
     const char* colortype_name(SkColorType);
 
     /**
      * Map opaque colors from 8888 to 565.
@@ skipping 96 matching lines @@
     // A helper for inserting a drawtext call into a SkTextBlobBuilder
     void add_to_text_blob(SkTextBlobBuilder* builder, const char* text, const SkPaint& origPaint,
                           SkScalar x, SkScalar y);
 
     void create_hemi_normal_map(SkBitmap* bm, const SkIRect& dst);
 
     void create_frustum_normal_map(SkBitmap* bm, const SkIRect& dst);
 
     void create_tetra_normal_map(SkBitmap* bm, const SkIRect& dst);
 
+    void make_big_path(SkPath& path);
 }  // namespace sk_tool_utils
 
 #endif  // sk_tool_utils_DEFINED