android: move overscroll effects to ui/

content/browser/android/animation_utils.h

-// Copyright 2014 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 CONTENT_BROWSER_ANDROID_ANIMATION_UTILS_H_
-#define CONTENT_BROWSER_ANDROID_ANIMATION_UTILS_H_
-
-namespace content {
-
-template <typename T>
-T Lerp(T a, T b, T t) {
-  return a + (b - a) * t;
-}
-
-template <typename T>
-T Clamp(T value, T low, T high) {
-  return value < low ? low : (value > high ? high : value);
-}
-
-template <typename T>
-T Damp(T input, T factor) {
-  T result;
-  if (factor == 1) {
-    result = 1 - (1 - input) * (1 - input);
-  } else {
-    result = 1 - std::pow(1 - input, 2 * factor);
-  }
-  return result;
-}
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_ANDROID_ANIMATION_UTILS_H_