Remove dead code processing wheel gesture phase.

third_party/WebKit/Source/platform/mac/ScrollAnimatorMac.mm

 /*
  * Copyright (C) 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 853 matching lines @@
     return;
   [m_scrollbarPainterController.get() windowOrderedIn];
 }
 
 void ScrollAnimatorMac::contentAreaDidHide() const {
   if (!getScrollableArea()->scrollbarsCanBeActive())
     return;
   [m_scrollbarPainterController.get() windowOrderedOut];
 }
 
-void ScrollAnimatorMac::didBeginScrollGesture() const {
-  if (!getScrollableArea()->scrollbarsCanBeActive())
-    return;
-  [m_scrollbarPainterController.get() beginScrollGesture];
-}
-
-void ScrollAnimatorMac::didEndScrollGesture() const {
-  if (!getScrollableArea()->scrollbarsCanBeActive())
-    return;
-  [m_scrollbarPainterController.get() endScrollGesture];
-}
-
-void ScrollAnimatorMac::mayBeginScrollGesture() const {
-  if (!getScrollableArea()->scrollbarsCanBeActive())
-    return;
-  [m_scrollbarPainterController.get() beginScrollGesture];
-  [m_scrollbarPainterController.get() contentAreaScrolled];
-}
-
 void ScrollAnimatorMac::finishCurrentScrollAnimations() {
   [m_scrollbarPainterController.get() hideOverlayScrollers];
 }
 
 void ScrollAnimatorMac::didAddVerticalScrollbar(Scrollbar& scrollbar) {
   ScrollbarPainter painter = scrollbarPainterForScrollbar(scrollbar);
   if (!painter)
     return;
 
   ASSERT(!m_verticalScrollbarPainterDelegate);
@@ skipping 62 matching lines @@
   [m_verticalScrollbarPainterDelegate.get() updateVisibilityImmediately:show];
   [m_horizontalScrollbarPainterDelegate.get() updateVisibilityImmediately:show];
   return true;
 }
 
 void ScrollAnimatorMac::cancelAnimation() {
   [m_scrollAnimationHelper.get() _stopRun];
   m_haveScrolledSincePageLoad = false;
 }
 
-void ScrollAnimatorMac::handleWheelEventPhase(PlatformWheelEventPhase phase) {
-  // This may not have been set to true yet if the wheel event was handled by
-  // the ScrollingTree,
-  // So set it to true here.
-  m_haveScrolledSincePageLoad = true;
-
-  if (phase == PlatformWheelEventPhaseBegan)
-    didBeginScrollGesture();
-  else if (phase == PlatformWheelEventPhaseEnded ||
-           phase == PlatformWheelEventPhaseCancelled)
-    didEndScrollGesture();
-  else if (phase == PlatformWheelEventPhaseMayBegin)
-    mayBeginScrollGesture();
-}
-
 void ScrollAnimatorMac::updateScrollerStyle() {
   if (!getScrollableArea()->scrollbarsCanBeActive()) {
     m_needsScrollerStyleUpdate = true;
     return;
   }
 
   ScrollbarThemeMac* macTheme = macOverlayScrollbarTheme();
   if (!macTheme) {
     m_needsScrollerStyleUpdate = false;
     return;
@@ skipping 114 matching lines @@
     rectInViewCoordinates =
         verticalScrollbar->convertToContainingWidget(scrollerThumb);
 
   if (rectInViewCoordinates == m_visibleScrollerThumbRect)
     return;
 
   m_visibleScrollerThumbRect = rectInViewCoordinates;
 }
 
 }  // namespace blink