Revert 237848 "Use LatencyInfoSwapPromise to track LatencyInfo t..."

trunk/src/cc/base/latency_info_swap_promise.h

-// Copyright 2013 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef CC_BASE_LATENCY_INFO_SWAP_PROMISE_H_
-#define CC_BASE_LATENCY_INFO_SWAP_PROMISE_H_
-
-#include "base/compiler_specific.h"
-#include "cc/base/swap_promise.h"
-#include "ui/events/latency_info.h"
-
-namespace cc {
-
-class CC_EXPORT LatencyInfoSwapPromise : public SwapPromise {
- public:
-  explicit LatencyInfoSwapPromise(const ui::LatencyInfo& latency_info);
-  virtual ~LatencyInfoSwapPromise();
-
-  virtual void DidSwap(CompositorFrameMetadata* metadata) OVERRIDE;
-  virtual void DidNotSwap(DidNotSwapReason reason) OVERRIDE;
-
- private:
-  ui::LatencyInfo latency_;
-};
-
-}  // namespace cc
-
-#endif  // CC_BASE_LATENCY_INFO_SWAP_PROMISE_H_