Revert of Move BenchTimer to tools as Timer

tools/timer/GpuTimer.h

Index: tools/timer/GpuTimer.h
diff --git a/tools/timer/GpuTimer.h b/tools/timer/GpuTimer.h
deleted file mode 100644
index 2100312a21fb922321a215ab6665e0ae67992c59..0000000000000000000000000000000000000000
--- a/tools/timer/GpuTimer.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 GpuTimer_DEFINED
-#define GpuTimer_DEFINED
-
-class SkGLContextHelper;
-
-class GpuTimer {
-public:
-    GpuTimer(const SkGLContextHelper*);
-    ~GpuTimer();
-    void start();
-    double end();
-private:
-    unsigned fQuery;
-    int fStarted;
-    const SkGLContextHelper* fContext;
-    bool fSupported;
-};
-
-#endif