Revert of 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
new file mode 100644
index 0000000000000000000000000000000000000000..8fd97061b6c07163db32193f1c727e4e8d2b513f
--- /dev/null
+++ b/bench/BenchSysTimer_posix.h
@@ -0,0 +1,25 @@
+
+/*
+ * 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