Remove parts of //cc we aren't using

cc/animation/scrollbar_animation_controller_linear_fade.cc

-// Copyright 2012 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 "cc/animation/scrollbar_animation_controller_linear_fade.h"
-
-#include "base/time/time.h"
-#include "cc/layers/layer_impl.h"
-#include "cc/layers/scrollbar_layer_impl_base.h"
-
-namespace cc {
-
-scoped_ptr<ScrollbarAnimationControllerLinearFade>
-ScrollbarAnimationControllerLinearFade::Create(
-    LayerImpl* scroll_layer,
-    ScrollbarAnimationControllerClient* client,
-    base::TimeDelta delay_before_starting,
-    base::TimeDelta resize_delay_before_starting,
-    base::TimeDelta duration) {
-  return make_scoped_ptr(new ScrollbarAnimationControllerLinearFade(
-      scroll_layer, client, delay_before_starting, resize_delay_before_starting,
-      duration));
-}
-
-ScrollbarAnimationControllerLinearFade::ScrollbarAnimationControllerLinearFade(
-    LayerImpl* scroll_layer,
-    ScrollbarAnimationControllerClient* client,
-    base::TimeDelta delay_before_starting,
-    base::TimeDelta resize_delay_before_starting,
-    base::TimeDelta duration)
-    : ScrollbarAnimationController(scroll_layer,
-                                   client,
-                                   delay_before_starting,
-                                   resize_delay_before_starting,
-                                   duration) {
-}
-
-ScrollbarAnimationControllerLinearFade::
-    ~ScrollbarAnimationControllerLinearFade() {
-}
-
-void ScrollbarAnimationControllerLinearFade::RunAnimationFrame(float progress) {
-  ApplyOpacityToScrollbars(1.f - progress);
-  client_->SetNeedsRedrawForScrollbarAnimation();
-  if (progress == 1.f)
-    StopAnimation();
-}
-
-void ScrollbarAnimationControllerLinearFade::DidScrollUpdate(bool on_resize) {
-  ScrollbarAnimationController::DidScrollUpdate(on_resize);
-  ApplyOpacityToScrollbars(1.f);
-}
-
-void ScrollbarAnimationControllerLinearFade::ApplyOpacityToScrollbars(
-    float opacity) {
-  if (!scroll_layer_->scrollbars())
-    return;
-
-  LayerImpl::ScrollbarSet* scrollbars = scroll_layer_->scrollbars();
-  for (LayerImpl::ScrollbarSet::iterator it = scrollbars->begin();
-       it != scrollbars->end(); ++it) {
-    ScrollbarLayerImplBase* scrollbar = *it;
-
-    if (scrollbar->is_overlay_scrollbar())
-      scrollbar->SetOpacity(scrollbar->CanScrollOrientation() ? opacity : 0);
-  }
-}
-
-}  // namespace cc