Remove RenderLayerScrollableArea

sky/engine/core/rendering/RenderLayerScrollableArea.h

Index: sky/engine/core/rendering/RenderLayerScrollableArea.h
diff --git a/sky/engine/core/rendering/RenderLayerScrollableArea.h b/sky/engine/core/rendering/RenderLayerScrollableArea.h
deleted file mode 100644
index 624894484cf7c47388dded8fbf87452f3d144e03..0000000000000000000000000000000000000000
--- a/sky/engine/core/rendering/RenderLayerScrollableArea.h
+++ /dev/null
@@ -1,194 +0,0 @@
-/*
- * Copyright (C) 2003, 2009, 2012 Apple Inc. All rights reserved.
- *
- * Portions are Copyright (C) 1998 Netscape Communications Corporation.
- *
- * Other contributors:
- *   Robert O'Callahan <roc+@cs.cmu.edu>
- *   David Baron <dbaron@fas.harvard.edu>
- *   Christian Biesinger <cbiesinger@web.de>
- *   Randall Jesup <rjesup@wgate.com>
- *   Roland Mainz <roland.mainz@informatik.med.uni-giessen.de>
- *   Josh Soref <timeless@mac.com>
- *   Boris Zbarsky <bzbarsky@mit.edu>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * Alternatively, the contents of this file may be used under the terms
- * of either the Mozilla Public License Version 1.1, found at
- * http://www.mozilla.org/MPL/ (the "MPL") or the GNU General Public
- * License Version 2.0, found at http://www.fsf.org/copyleft/gpl.html
- * (the "GPL"), in which case the provisions of the MPL or the GPL are
- * applicable instead of those above.  If you wish to allow use of your
- * version of this file only under the terms of one of those two
- * licenses (the MPL or the GPL) and not to allow others to use your
- * version of this file under the LGPL, indicate your decision by
- * deletingthe provisions above and replace them with the notice and
- * other provisions required by the MPL or the GPL, as the case may be.
- * If you do not delete the provisions above, a recipient may use your
- * version of this file under any of the LGPL, the MPL or the GPL.
- */
-
-#ifndef SKY_ENGINE_CORE_RENDERING_RENDERLAYERSCROLLABLEAREA_H_
-#define SKY_ENGINE_CORE_RENDERING_RENDERLAYERSCROLLABLEAREA_H_
-
-#include "sky/engine/platform/scroll/ScrollableArea.h"
-
-namespace blink {
-
-class RenderBox;
-class RenderLayer;
-
-class RenderLayerScrollableArea final : public ScrollableArea {
-public:
-    // FIXME: We should pass in the RenderBox but this opens a window
-    // for crashers during RenderLayer setup (see crbug.com/368062).
-    RenderLayerScrollableArea(RenderLayer&);
-    virtual ~RenderLayerScrollableArea();
-
-    bool hasHorizontalScrollbar() const { return horizontalScrollbar(); }
-    bool hasVerticalScrollbar() const { return verticalScrollbar(); }
-
-    Scrollbar* horizontalScrollbar() const override { return m_hBar.get(); }
-    Scrollbar* verticalScrollbar() const override { return m_vBar.get(); }
-
-    HostWindow* hostWindow() const override;
-
-    bool isActive() const override;
-    IntRect scrollCornerRect() const;
-    IntRect convertFromScrollbarToContainingView(const Scrollbar*, const IntRect&) const override;
-    IntRect convertFromContainingViewToScrollbar(const Scrollbar*, const IntRect&) const override;
-    IntPoint convertFromScrollbarToContainingView(const Scrollbar*, const IntPoint&) const override;
-    IntPoint convertFromContainingViewToScrollbar(const Scrollbar*, const IntPoint&) const override;
-    int scrollSize(ScrollbarOrientation) const override;
-    void setScrollOffset(const IntPoint&) override;
-    IntPoint scrollPosition() const override;
-    IntPoint minimumScrollPosition() const override;
-    IntPoint maximumScrollPosition() const override;
-    IntRect visibleContentRect(IncludeScrollbarsInRect) const;
-    int visibleHeight() const;
-    int visibleWidth() const;
-    IntSize contentsSize() const override;
-    IntSize overhangAmount() const;
-    IntRect scrollableAreaBoundingBox() const;
-    bool userInputScrollable(ScrollbarOrientation) const override;
-    bool shouldPlaceVerticalScrollbarOnLeft() const override;
-    int pageStep(ScrollbarOrientation) const override;
-
-    int scrollXOffset() const { return m_scrollOffset.width() + scrollOrigin().x(); }
-    int scrollYOffset() const { return m_scrollOffset.height() + scrollOrigin().y(); }
-
-    IntSize scrollOffset() const { return m_scrollOffset; }
-
-    // FIXME: We shouldn't allow access to m_overflowRect outside this class.
-    LayoutRect overflowRect() const { return m_overflowRect; }
-
-    void scrollToOffset(const IntSize& scrollOffset, ScrollOffsetClamping = ScrollOffsetUnclamped);
-    void scrollToXOffset(int x, ScrollOffsetClamping clamp = ScrollOffsetUnclamped) { scrollToOffset(IntSize(x, scrollYOffset()), clamp); }
-    void scrollToYOffset(int y, ScrollOffsetClamping clamp = ScrollOffsetUnclamped) { scrollToOffset(IntSize(scrollXOffset(), y), clamp); }
-
-    void updateAfterLayout();
-    void updateAfterStyleChange(const RenderStyle*);
-    void updateAfterOverflowRecalc();
-
-    bool updateAfterCompositingChange() override;
-
-    bool hasScrollbar() const { return m_hBar || m_vBar; }
-
-    LayoutUnit scrollWidth() const;
-    LayoutUnit scrollHeight() const;
-    int pixelSnappedScrollWidth() const;
-    int pixelSnappedScrollHeight() const;
-
-    IntSize adjustedScrollOffset() const { return IntSize(scrollXOffset(), scrollYOffset()); }
-
-    void paintOverflowControls(GraphicsContext*, const IntPoint& paintOffset, const IntRect& damageRect, bool paintingOverlayControls);
-    void positionOverflowControls(const IntSize& offsetFromRoot);
-
-    LayoutRect exposeRect(const LayoutRect&, const ScrollAlignment& alignX, const ScrollAlignment& alignY);
-
-    // Returns true our scrollable area is in the FrameView's collection of scrollable areas. This can
-    // only happen if we're both scrollable, and we do in fact overflow. This means that overflow: hidden
-    // layers never get added to the FrameView's collection.
-    bool scrollsOverflow() const { return m_scrollsOverflow; }
-
-    // FIXME(sky): Remove
-    bool needsCompositedScrolling() const { return m_needsCompositedScrolling; }
-
-    // These are used during compositing updates to determine if the overflow
-    // controls need to be repositioned in the GraphicsLayer tree.
-    void setTopmostScrollChild(RenderLayer*);
-    RenderLayer* topmostScrollChild() const { ASSERT(!m_nextTopmostScrollChild); return m_topmostScrollChild; }
-
-private:
-    bool hasHorizontalOverflow() const;
-    bool hasVerticalOverflow() const;
-    bool hasScrollableHorizontalOverflow() const;
-    bool hasScrollableVerticalOverflow() const;
-
-    void computeScrollDimensions();
-
-    IntSize clampScrollOffset(const IntSize&) const;
-
-    void setScrollOffset(const IntSize& scrollOffset) { m_scrollOffset = scrollOffset; }
-
-    IntRect rectForHorizontalScrollbar(const IntRect& borderBoxRect) const;
-    IntRect rectForVerticalScrollbar(const IntRect& borderBoxRect) const;
-    LayoutUnit verticalScrollbarStart(int minX, int maxX) const;
-    LayoutUnit horizontalScrollbarStart(int minX) const;
-    IntSize scrollbarOffset(const Scrollbar*) const;
-
-    PassRefPtr<Scrollbar> createScrollbar(ScrollbarOrientation);
-    void destroyScrollbar(ScrollbarOrientation);
-
-    void setHasHorizontalScrollbar(bool hasScrollbar);
-    void setHasVerticalScrollbar(bool hasScrollbar);
-
-    bool overflowControlsIntersectRect(const IntRect& localRect) const;
-
-    RenderBox& box() const;
-    RenderLayer* layer() const;
-
-    void updateScrollableAreaSet(bool hasOverflow);
-
-    RenderLayer& m_layer;
-
-    unsigned m_scrollsOverflow : 1;
-
-    unsigned m_scrollDimensionsDirty : 1;
-
-    RenderLayer* m_nextTopmostScrollChild;
-    RenderLayer* m_topmostScrollChild;
-
-    // FIXME: once cc can handle composited scrolling with clip paths, we will
-    // no longer need this bit.
-    unsigned m_needsCompositedScrolling : 1;
-
-    // The width/height of our scrolled area.
-    LayoutRect m_overflowRect;
-
-    // This is the (scroll) offset from scrollOrigin().
-    IntSize m_scrollOffset;
-
-    IntPoint m_cachedOverlayScrollbarOffset;
-
-    // For areas with overflow, we have a pair of scrollbars.
-    RefPtr<Scrollbar> m_hBar;
-    RefPtr<Scrollbar> m_vBar;
-};
-
-} // namespace blink
-
-#endif  // SKY_ENGINE_CORE_RENDERING_RENDERLAYERSCROLLABLEAREA_H_