Replace old with new synthetic gesture framework.

content/browser/renderer_host/synthetic_gesture_calculator.cc

-// 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.
-
-#include "content/browser/renderer_host/synthetic_gesture_calculator.h"
-
-
-namespace {
-
-const float kDefaultPositionDelta = 10.0f;
-
-}
-
-
-namespace content {
-
-SyntheticGestureCalculator::SyntheticGestureCalculator() {
-}
-
-SyntheticGestureCalculator::~SyntheticGestureCalculator() {
-}
-
-float SyntheticGestureCalculator::GetDelta(
-    base::TimeTicks now, base::TimeDelta desired_interval) {
-  float position_delta = kDefaultPositionDelta;
-  if (!last_tick_time_.is_null()) {
-    float velocity = kDefaultPositionDelta /
-        (float)desired_interval.InMillisecondsF();
-    float time_delta = (now - last_tick_time_).InMillisecondsF();
-    position_delta = velocity * time_delta;
-  }
-
-  last_tick_time_ = now;
-  return position_delta;
-}
-
-}  // namespace content