Move BenchTimer to tools as Timer

bench/BenchSysTimer_posix.h

Index: bench/BenchSysTimer_posix.h
diff --git a/bench/BenchSysTimer_posix.h b/bench/BenchSysTimer_posix.h
deleted file mode 100644
index 8fd97061b6c07163db32193f1c727e4e8d2b513f..0000000000000000000000000000000000000000
--- a/bench/BenchSysTimer_posix.h
+++ /dev/null
@@ -1,25 +0,0 @@
-
-/*
- * Copyright 2011 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-#ifndef SkBenchSysTimer_DEFINED
-#define SkBenchSysTimer_DEFINED
-
-//Time
-#include <time.h>
-
-class BenchSysTimer {
-public:
-    void startWall();
-    void startCpu();
-    double endCpu();
-    double endWall();
-private:
-    timespec fCpu;
-    timespec fWall;
-};
-
-#endif