Revert of SkTime::GetNSecs()

tools/timer/SysTimer_posix.h

Index: tools/timer/SysTimer_posix.h
diff --git a/tools/timer/SysTimer_posix.h b/tools/timer/SysTimer_posix.h
new file mode 100644
index 0000000000000000000000000000000000000000..1eca909e269e168377054747467922ea6e5275d9
--- /dev/null
+++ b/tools/timer/SysTimer_posix.h
@@ -0,0 +1,23 @@
+/*
+ * 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 SysTimer_DEFINED
+#define SysTimer_DEFINED
+
+#include <time.h>
+
+class SysTimer {
+public:
+    void startWall();
+    void startCpu();
+    double endCpu();
+    double endWall();
+private:
+    timespec fCpu;
+    timespec fWall;
+};
+
+#endif