Revert "Revert "SkTypes: extract SkTo""

This reverts commit fdcfb8b7c23fbf18f872d2c31d27978235033876.

> Original change's description:
> > SkTypes: extract SkTo
> >
> > Change-Id: I8de790d5013db2105ad885fa2683303d7c250b09
> > Reviewed-on: https://skia-review.googlesource.com/133620
> > Reviewed-by: Mike Klein <mtklein@google.com>

Change-Id: Ida74fbc5c21248a724a5edbf9fae18a33bcb23aa
Reviewed-on: https://skia-review.googlesource.com/134506
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>
diff --git a/bench/BitmapRectBench.cpp b/bench/BitmapRectBench.cpp
index 789a725..0e5d362 100644
--- a/bench/BitmapRectBench.cpp
+++ b/bench/BitmapRectBench.cpp
@@ -4,6 +4,7 @@
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
+
 #include "Benchmark.h"
 #include "SkBitmap.h"
 #include "SkCanvas.h"
@@ -11,6 +12,7 @@
 #include "SkPaint.h"
 #include "SkRandom.h"
 #include "SkString.h"
+#include "SkTo.h"
 
 static void draw_into_bitmap(const SkBitmap& bm) {
     const int w = bm.width();