diff -r 000000000000 -r 6474c204b198 gfx/skia/trunk/include/utils/SkCountdown.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/skia/trunk/include/utils/SkCountdown.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2012 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkCountdown_DEFINED
+#define SkCountdown_DEFINED
+
+#include "SkCondVar.h"
+#include "SkRunnable.h"
+#include "SkTypes.h"
+
+class SkCountdown : public SkRunnable {
+public:
+    explicit SkCountdown(int32_t count);
+
+    /**
+     * Resets the countdown to the count provided.
+     */
+    void reset(int32_t count);
+
+    virtual void run() SK_OVERRIDE;
+
+    /**
+     * Blocks until run() has been called count times.
+     */
+    void wait();
+
+private:
+    SkCondVar fReady;
+    int32_t   fCount;
+};
+
+#endif