It is time.

ui/views/controls/scrollbar/overlay_scroll_bar.cc

Index: ui/views/controls/scrollbar/overlay_scroll_bar.cc
diff --git a/ui/views/controls/scrollbar/overlay_scroll_bar.cc b/ui/views/controls/scrollbar/overlay_scroll_bar.cc
deleted file mode 100644
index ad54fd7368d3da7a4b0d5b7961949d11e8466a08..0000000000000000000000000000000000000000
--- a/ui/views/controls/scrollbar/overlay_scroll_bar.cc
+++ /dev/null
@@ -1,161 +0,0 @@
-// 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 "ui/views/controls/scrollbar/overlay_scroll_bar.h"
-
-#include "third_party/skia/include/core/SkColor.h"
-#include "third_party/skia/include/core/SkXfermode.h"
-#include "ui/gfx/canvas.h"
-#include "ui/views/background.h"
-#include "ui/views/border.h"
-#include "ui/views/controls/scrollbar/base_scroll_bar_thumb.h"
-
-namespace views {
-namespace {
-
-const int kScrollbarWidth = 10;
-const int kThumbInsetInside = 3;
-const int kThumbInsetFromEdge = 1;
-const int kThumbCornerRadius = 2;
-const int kThumbMinimumSize = kScrollbarWidth;
-const int kThumbHoverAlpha = 128;
-const int kThumbDefaultAlpha = 64;
-
-class OverlayScrollBarThumb : public BaseScrollBarThumb,
-                              public gfx::AnimationDelegate {
- public:
-  explicit OverlayScrollBarThumb(BaseScrollBar* scroll_bar);
-  virtual ~OverlayScrollBarThumb();
-
- protected:
-  // View overrides:
-  virtual gfx::Size GetPreferredSize() const override;
-  virtual void OnPaint(gfx::Canvas* canvas) override;
-
-  // gfx::AnimationDelegate overrides:
-  virtual void AnimationProgressed(const gfx::Animation* animation) override;
-
- private:
-  double animation_opacity_;
-  DISALLOW_COPY_AND_ASSIGN(OverlayScrollBarThumb);
-};
-
-OverlayScrollBarThumb::OverlayScrollBarThumb(BaseScrollBar* scroll_bar)
-    : BaseScrollBarThumb(scroll_bar),
-      animation_opacity_(0.0) {
-  // This is necessary, otherwise the thumb will be rendered below the views if
-  // those views paint to their own layers.
-  SetPaintToLayer(true);
-  SetFillsBoundsOpaquely(false);
-}
-
-OverlayScrollBarThumb::~OverlayScrollBarThumb() {
-}
-
-gfx::Size OverlayScrollBarThumb::GetPreferredSize() const {
-  return gfx::Size(kThumbMinimumSize, kThumbMinimumSize);
-}
-
-void OverlayScrollBarThumb::OnPaint(gfx::Canvas* canvas) {
-  gfx::Rect local_bounds(GetLocalBounds());
-  SkPaint paint;
-  int alpha = kThumbDefaultAlpha * animation_opacity_;
-  if (GetState() == CustomButton::STATE_HOVERED) {
-    alpha = kThumbHoverAlpha * animation_opacity_;
-  } else if(GetState() == CustomButton::STATE_PRESSED) {
-    // If we are in pressed state, no need to worry about animation,
-    // just display the deeper color.
-    alpha = kThumbHoverAlpha;
-  }
-
-  paint.setStyle(SkPaint::kFill_Style);
-  paint.setColor(SkColorSetARGB(alpha, 0, 0, 0));
-  canvas->DrawRoundRect(local_bounds, kThumbCornerRadius, paint);
-}
-
-void OverlayScrollBarThumb::AnimationProgressed(
-    const gfx::Animation* animation) {
-  animation_opacity_ = animation->GetCurrentValue();
-  SchedulePaint();
-}
-
-}  // namespace
-
-OverlayScrollBar::OverlayScrollBar(bool horizontal)
-    : BaseScrollBar(horizontal, new OverlayScrollBarThumb(this)),
-      animation_(static_cast<OverlayScrollBarThumb*>(GetThumb())) {
-  set_notify_enter_exit_on_child(true);
-}
-
-OverlayScrollBar::~OverlayScrollBar() {
-}
-
-gfx::Rect OverlayScrollBar::GetTrackBounds() const {
-  gfx::Rect local_bounds(GetLocalBounds());
-  if (IsHorizontal()) {
-    local_bounds.Inset(kThumbInsetFromEdge, kThumbInsetInside,
-                       kThumbInsetFromEdge, kThumbInsetFromEdge);
-  } else {
-    local_bounds.Inset(kThumbInsetInside, kThumbInsetFromEdge,
-                       kThumbInsetFromEdge, kThumbInsetFromEdge);
-  }
-  gfx::Size track_size = local_bounds.size();
-  track_size.SetToMax(GetThumb()->size());
-  local_bounds.set_size(track_size);
-  return local_bounds;
-}
-
-int OverlayScrollBar::GetLayoutSize() const {
-  return 0;
-}
-
-int OverlayScrollBar::GetContentOverlapSize() const {
-  return kScrollbarWidth;
-}
-
-void OverlayScrollBar::OnMouseEnteredScrollView(const ui::MouseEvent& event) {
-  animation_.Show();
-}
-
-void OverlayScrollBar::OnMouseExitedScrollView(const ui::MouseEvent& event) {
-  animation_.Hide();
-}
-
-void OverlayScrollBar::OnGestureEvent(ui::GestureEvent* event) {
-  switch (event->type()) {
-    case ui::ET_GESTURE_SCROLL_BEGIN:
-      animation_.Show();
-      break;
-    case ui::ET_GESTURE_SCROLL_END:
-    case ui::ET_SCROLL_FLING_START:
-    case ui::ET_GESTURE_END:
-      animation_.Hide();
-      break;
-    default:
-      break;
-  }
-  BaseScrollBar::OnGestureEvent(event);
-}
-
-gfx::Size OverlayScrollBar::GetPreferredSize() const {
-  return gfx::Size();
-}
-
-void OverlayScrollBar::Layout() {
-  gfx::Rect thumb_bounds = GetTrackBounds();
-  BaseScrollBarThumb* thumb = GetThumb();
-  if (IsHorizontal()) {
-    thumb_bounds.set_x(thumb->x());
-    thumb_bounds.set_width(thumb->width());
-  } else {
-    thumb_bounds.set_y(thumb->y());
-    thumb_bounds.set_height(thumb->height());
-  }
-  thumb->SetBoundsRect(thumb_bounds);
-}
-
-void OverlayScrollBar::OnPaint(gfx::Canvas* canvas) {
-}
-
-}  // namespace views