Remove more scrolling code from Sky

sky/engine/core/page/EventHandler.h

 /*
  * Copyright (C) 2006, 2007, 2009, 2010, 2011 Apple Inc. All rights reserved.
  *
  * 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
@@ skipping 17 matching lines @@
 
 #include "sky/engine/core/editing/TextGranularity.h"
 #include "sky/engine/core/events/TextEventInputType.h"
 #include "sky/engine/core/page/FocusType.h"
 #include "sky/engine/core/rendering/HitTestRequest.h"
 #include "sky/engine/core/rendering/style/RenderStyleConstants.h"
 #include "sky/engine/platform/Cursor.h"
 #include "sky/engine/platform/Timer.h"
 #include "sky/engine/platform/geometry/LayoutPoint.h"
 #include "sky/engine/platform/heap/Handle.h"
-#include "sky/engine/platform/scroll/ScrollTypes.h"
 #include "sky/engine/wtf/Forward.h"
 #include "sky/engine/wtf/HashMap.h"
 #include "sky/engine/wtf/HashTraits.h"
 #include "sky/engine/wtf/RefPtr.h"
 
 namespace blink {
 
-class AutoscrollController;
 class Document;
 class Element;
 class Event;
 class EventTarget;
 class FloatPoint;
 class FloatQuad;
 class HitTestRequest;
 class HitTestResult;
 class KeyboardEvent;
 class LocalFrame;
@@ skipping 10 matching lines @@
 
 class EventHandler {
     WTF_MAKE_NONCOPYABLE(EventHandler);
 public:
     explicit EventHandler(LocalFrame*);
     ~EventHandler();
 
     void clear();
     void nodeWillBeRemoved(Node&);
 
-    void stopAutoscroll();
-
     HitTestResult hitTestResultAtPoint(const LayoutPoint&,
         HitTestRequest::HitTestRequestType hitType = HitTestRequest::ReadOnly | HitTestRequest::Active,
         const LayoutSize& padding = LayoutSize());
 
     void scheduleCursorUpdate();
 
-    // Attempts to scroll the DOM tree. If that fails, scrolls the view.
-    // If the view can't be scrolled either, recursively bubble to the parent frame.
-    bool bubblingScroll(ScrollDirection, ScrollGranularity, Node* startingNode = 0);
-
     void defaultKeyboardEventHandler(KeyboardEvent*);
 
     bool handleTextInputEvent(const String& text, Event* underlyingEvent = 0, TextEventInputType = TextEventInputKeyboard);
     void defaultTextInputEventHandler(TextEvent*);
 
     void focusDocumentView();
 
     void capsLockStateMayHaveChanged(); // Only called by FrameSelection
 
     bool useHandCursor(Node*, bool isOverLink);
 
     void notifyElementActivated();
 
 private:
     void selectClosestWordFromHitTestResult(const HitTestResult&, AppendTrailingWhitespace);
     void selectClosestMisspellingFromHitTestResult(const HitTestResult&, AppendTrailingWhitespace);
 
     OptionalCursor selectCursor(const HitTestResult&);
     OptionalCursor selectAutoCursor(const HitTestResult&, Node*, const Cursor& iBeam);
 
     void hoverTimerFired(Timer<EventHandler>*);
     void cursorUpdateTimerFired(Timer<EventHandler>*);
     void activeIntervalTimerFired(Timer<EventHandler>*);
 
     bool isCursorVisible() const;
     void updateCursor();
 
-    // Scrolls the elements of the DOM tree. Returns true if a node was scrolled.
-    // False if we reached the root and couldn't scroll anything.
-    // direction - The direction to scroll in. If this is a logicl direction, it will be
-    //             converted to the physical direction based on a node's writing mode.
-    // granularity - The units that the  scroll delta parameter is in.
-    // startNode - The node to start bubbling the scroll from. If a node can't scroll,
-    //             the scroll bubbles up to the containing block.
-    // stopNode - On input, if provided and non-null, the node at which we should stop bubbling on input.
-    //            On output, if provided and a node was scrolled stopNode will point to that node.
-    // delta - The delta to scroll by, in the units of the granularity parameter. (e.g. pixels, lines, pages, etc.)
-    // absolutePoint - For wheel scrolls - the location, in absolute coordinates, where the event occured.
-    bool scroll(ScrollDirection, ScrollGranularity, Node* startNode = 0, Node** stopNode = 0, float delta = 1.0f, IntPoint absolutePoint = IntPoint());
-
     TouchAction intersectTouchAction(const TouchAction, const TouchAction);
     TouchAction computeEffectiveTouchAction(const Node&);
 
     HitTestResult hitTestResultInFrame(LocalFrame*, const LayoutPoint&, HitTestRequest::HitTestRequestType hitType = HitTestRequest::ReadOnly | HitTestRequest::Active);
 
     void invalidateClick();
 
     bool dragHysteresisExceeded(const FloatPoint&) const;
     bool dragHysteresisExceeded(const IntPoint&) const;
 
     void defaultTabEventHandler(KeyboardEvent*);
 
     bool capturesDragging() const { return m_capturesDragging; }
 
-    AutoscrollController* autoscrollController() const;
-
     LocalFrame* const m_frame;
 
     bool m_capturesDragging;
 
     enum SelectionInitiationState { HaveNotStartedSelection, PlacedCaret, ExtendedSelection };
     SelectionInitiationState m_selectionInitiationState;
 
     LayoutPoint m_dragStartPos;
 
     Timer<EventHandler> m_cursorUpdateTimer;
 
     int m_clickCount;
     RefPtr<Node> m_clickNode;
 
     RefPtr<Node> m_dragTarget;
     bool m_shouldOnlyFireDragOverEvent;
 
     bool m_didStartDrag;
 
     Timer<EventHandler> m_activeIntervalTimer;
     double m_lastShowPressTimestamp;
     RefPtr<Element> m_lastDeferredTapElement;
 };
 
 } // namespace blink
 
 #endif  // SKY_ENGINE_CORE_PAGE_EVENTHANDLER_H_