Remove more scrolling code from Sky

sky/engine/core/page/AutoscrollController.cpp

Index: sky/engine/core/page/AutoscrollController.cpp
diff --git a/sky/engine/core/page/AutoscrollController.cpp b/sky/engine/core/page/AutoscrollController.cpp
deleted file mode 100644
index 6a9010f29d1534babcb685349ba68e1db64daddf..0000000000000000000000000000000000000000
--- a/sky/engine/core/page/AutoscrollController.cpp
+++ /dev/null
@@ -1,182 +0,0 @@
-/*
- * Copyright (C) 2013 Google Inc. All rights reserved.
- * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
- * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
- * Copyright (C) 2012 Digia Plc. and/or its subsidiary(-ies)
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "sky/engine/config.h"
-#include "sky/engine/core/page/AutoscrollController.h"
-
-#include "sky/engine/core/frame/FrameView.h"
-#include "sky/engine/core/frame/LocalFrame.h"
-#include "sky/engine/core/page/EventHandler.h"
-#include "sky/engine/core/page/Page.h"
-#include "sky/engine/core/rendering/HitTestResult.h"
-#include "sky/engine/core/rendering/RenderBox.h"
-#include "sky/engine/wtf/CurrentTime.h"
-
-namespace blink {
-
-// Delay time in second for start autoscroll if pointer is in border edge of scrollable element.
-static double autoscrollDelay = 0.2;
-
-PassOwnPtr<AutoscrollController> AutoscrollController::create(Page& page)
-{
-    return adoptPtr(new AutoscrollController(page));
-}
-
-AutoscrollController::AutoscrollController(Page& page)
-    : m_page(page)
-    , m_autoscrollRenderer(0)
-    , m_autoscrollType(NoAutoscroll)
-    , m_dragAndDropAutoscrollStartTime(0)
-{
-}
-
-bool AutoscrollController::autoscrollInProgress() const
-{
-    return m_autoscrollType == AutoscrollForSelection;
-}
-
-bool AutoscrollController::autoscrollInProgress(const RenderBox* renderer) const
-{
-    return m_autoscrollRenderer == renderer;
-}
-
-void AutoscrollController::startAutoscrollForSelection(RenderObject* renderer)
-{
-    // We don't want to trigger the autoscroll or the panScroll if it's already active
-    if (m_autoscrollType != NoAutoscroll)
-        return;
-    RenderBox* scrollable = RenderBox::findAutoscrollable(renderer);
-    if (!scrollable)
-        return;
-    m_autoscrollType = AutoscrollForSelection;
-    m_autoscrollRenderer = scrollable;
-    startAutoscroll();
-}
-
-void AutoscrollController::stopAutoscroll()
-{
-    RenderBox* scrollable = m_autoscrollRenderer;
-    m_autoscrollRenderer = 0;
-
-    if (!scrollable)
-        return;
-
-    scrollable->stopAutoscroll();
-
-    m_autoscrollType = NoAutoscroll;
-}
-
-void AutoscrollController::stopAutoscrollIfNeeded(RenderObject* renderer)
-{
-    if (m_autoscrollRenderer != renderer)
-        return;
-    m_autoscrollRenderer = 0;
-    m_autoscrollType = NoAutoscroll;
-}
-
-void AutoscrollController::updateAutoscrollRenderer()
-{
-    if (!m_autoscrollRenderer)
-        return;
-
-    RenderObject* renderer = m_autoscrollRenderer;
-
-    while (renderer && !(renderer->isBox() && toRenderBox(renderer)->canAutoscroll()))
-        renderer = renderer->parent();
-    m_autoscrollRenderer = renderer && renderer->isBox() ? toRenderBox(renderer) : 0;
-}
-
-void AutoscrollController::updateDragAndDrop(Node* dropTargetNode, const IntPoint& eventPosition, double eventTime)
-{
-    if (!dropTargetNode || !dropTargetNode->renderer()) {
-        stopAutoscroll();
-        return;
-    }
-
-    if (m_autoscrollRenderer && m_autoscrollRenderer->frame() != dropTargetNode->renderer()->frame())
-        return;
-
-    RenderBox* scrollable = RenderBox::findAutoscrollable(dropTargetNode->renderer());
-    if (!scrollable) {
-        stopAutoscroll();
-        return;
-    }
-
-    Page* page = scrollable->frame() ? scrollable->frame()->page() : 0;
-    if (!page) {
-        stopAutoscroll();
-        return;
-    }
-
-    IntSize offset = scrollable->calculateAutoscrollDirection(eventPosition);
-    if (offset.isZero()) {
-        stopAutoscroll();
-        return;
-    }
-
-    m_dragAndDropAutoscrollReferencePosition = eventPosition + offset;
-
-    if (m_autoscrollType == NoAutoscroll) {
-        m_autoscrollType = AutoscrollForDragAndDrop;
-        m_autoscrollRenderer = scrollable;
-        m_dragAndDropAutoscrollStartTime = eventTime;
-        startAutoscroll();
-    } else if (m_autoscrollRenderer != scrollable) {
-        m_dragAndDropAutoscrollStartTime = eventTime;
-        m_autoscrollRenderer = scrollable;
-    }
-}
-
-// FIXME: This would get get better animation fidelity if it used the monotonicFrameBeginTime instead
-// of WTF::currentTime().
-void AutoscrollController::animate(double)
-{
-    if (!m_autoscrollRenderer) {
-        stopAutoscroll();
-        return;
-    }
-
-    switch (m_autoscrollType) {
-    case AutoscrollForDragAndDrop:
-        if (WTF::currentTime() - m_dragAndDropAutoscrollStartTime > autoscrollDelay)
-            m_autoscrollRenderer->autoscroll(m_dragAndDropAutoscrollReferencePosition);
-        break;
-    case AutoscrollForSelection:
-    case NoAutoscroll:
-        break;
-    }
-    if (m_autoscrollType != NoAutoscroll)
-        startAutoscroll();
-}
-
-void AutoscrollController::startAutoscroll()
-{
-    m_page.animator().scheduleVisualUpdate();
-}
-
-} // namespace blink