[Oilpan] Move ScrollAnimators onto oilpan heap

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
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 #include "platform/animation/TimingFunction.h"
 #include "platform/geometry/FloatRect.h"
 #include "platform/geometry/IntRect.h"
 #include "platform/mac/BlockExceptions.h"
 #include "platform/mac/NSScrollerImpDetails.h"
 #include "platform/scroll/ScrollableArea.h"
 #include "platform/scroll/ScrollbarTheme.h"
 #include "platform/scroll/ScrollbarThemeMacCommon.h"
 #include "platform/scroll/ScrollbarThemeMacOverlayAPI.h"
 #include "wtf/MainThread.h"
-#include "wtf/PassOwnPtr.h"
 
 using namespace blink;
 
 static bool supportsUIStateTransitionProgress()
 {
     // FIXME: This is temporary until all platforms that support ScrollbarPainter support this part of the API.
     static bool globalSupportsUIStateTransitionProgress = [NSClassFromString(@"NSScrollerImp") instancesRespondToSelector:@selector(mouseEnteredScroller)];
     return globalSupportsUIStateTransitionProgress;
 }
 
@@ skipping 618 matching lines @@
     [_trackAlphaAnimation.get() invalidate];
     [_uiStateTransitionAnimation.get() invalidate];
     [_expansionTransitionAnimation.get() invalidate];
     END_BLOCK_OBJC_EXCEPTIONS;
 }
 
 @end
 
 namespace blink {
 
-PassOwnPtr<ScrollAnimatorBase> ScrollAnimatorBase::create(ScrollableArea* scrollableArea)
+PassOwnPtrWillBeRawPtr<ScrollAnimatorBase> ScrollAnimatorBase::create(ScrollableArea* scrollableArea)
 {
-    return adoptPtr(new ScrollAnimatorMac(scrollableArea));
+    return adoptPtrWillBeNoop(new ScrollAnimatorMac(scrollableArea));
 }
 
 ScrollAnimatorMac::ScrollAnimatorMac(ScrollableArea* scrollableArea)
     : ScrollAnimatorBase(scrollableArea)
     , m_initialScrollbarPaintTimer(this, &ScrollAnimatorMac::initialScrollbarPaintTimerFired)
     , m_sendContentAreaScrolledTimer(this, &ScrollAnimatorMac::sendContentAreaScrolledTimerFired)
     , m_haveScrolledSincePageLoad(false)
     , m_needsScrollerStyleUpdate(false)
 {
+#if ENABLE(OILPAN)
+    ThreadState::current()->registerPreFinalizer(this);
+#endif
+
     m_scrollAnimationHelperDelegate.adoptNS([[WebScrollAnimationHelperDelegate alloc] initWithScrollAnimator:this]);
     m_scrollAnimationHelper.adoptNS([[NSClassFromString(@"NSScrollAnimationHelper") alloc] initWithDelegate:m_scrollAnimationHelperDelegate.get()]);
 
     if (ScrollbarThemeMacCommon::isOverlayAPIAvailable()) {
         m_scrollbarPainterControllerDelegate.adoptNS([[WebScrollbarPainterControllerDelegate alloc] initWithScrollableArea:scrollableArea]);
         m_scrollbarPainterController = [[[NSClassFromString(@"NSScrollerImpPair") alloc] init] autorelease];
         [m_scrollbarPainterController.get() performSelector:@selector(setDelegate:) withObject:m_scrollbarPainterControllerDelegate.get()];
         [m_scrollbarPainterController.get() setScrollerStyle:ScrollbarThemeMacCommon::recommendedScrollerStyle()];
     }
 }
 
 ScrollAnimatorMac::~ScrollAnimatorMac()
 {
+}
+
+void ScrollAnimatorMac::cleanup()
+{
     if (ScrollbarThemeMacCommon::isOverlayAPIAvailable()) {
         BEGIN_BLOCK_OBJC_EXCEPTIONS;
         [m_scrollbarPainterControllerDelegate.get() invalidate];
         [m_scrollbarPainterController.get() setDelegate:nil];
         [m_horizontalScrollbarPainterDelegate.get() invalidate];
         [m_verticalScrollbarPainterDelegate.get() invalidate];
         [m_scrollAnimationHelperDelegate.get() invalidate];
         END_BLOCK_OBJC_EXCEPTIONS;
     }
+    m_initialScrollbarPaintTimer.stop();
+    m_sendContentAreaScrolledTimer.stop();
 }
 
 ScrollResultOneDimensional ScrollAnimatorMac::userScroll(ScrollbarOrientation orientation, ScrollGranularity granularity, float step, float delta)
 {
     bool scrollAnimationEnabledForSystem = static_cast<ScrollbarThemeMacCommon*>(
                                                ScrollbarTheme::theme())
                                                ->scrollAnimationEnabledForSystem();
     m_haveScrolledSincePageLoad = true;
 
     if (!scrollAnimationEnabledForSystem || !m_scrollableArea->scrollAnimatorEnabled())
@@ skipping 462 matching lines @@
         return;
 
     m_visibleScrollerThumbRect = rectInViewCoordinates;
 }
 
 bool ScrollAnimatorMac::canUseCoordinatedScrollbar() {
     return ScrollbarThemeMacCommon::isOverlayAPIAvailable();
 }
 
 } // namespace blink