Give OOPIF FrameViews their own scroll animation timelines and hosts

third_party/WebKit/Source/core/frame/FrameView.h

 /*
    Copyright (C) 1997 Martin Jones (mjones@kde.org)
              (C) 1998 Waldo Bastian (bastian@kde.org)
              (C) 1998, 1999 Torben Weis (weis@kde.org)
              (C) 1999 Lars Knoll (knoll@kde.org)
              (C) 1999 Antti Koivisto (koivisto@kde.org)
    Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights
    reserved.
 
    This library is free software; you can redistribute it and/or
@@ skipping 22 matching lines @@
 #include "core/frame/RootFrameViewport.h"
 #include "core/layout/MapCoordinatesFlags.h"
 #include "core/layout/ScrollAnchor.h"
 #include "core/paint/FirstMeaningfulPaintDetector.h"
 #include "core/paint/ObjectPaintProperties.h"
 #include "core/paint/PaintInvalidationCapableScrollableArea.h"
 #include "core/paint/PaintPhase.h"
 #include "core/paint/ScrollbarManager.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/Widget.h"
+#include "platform/animation/CompositorAnimationHost.h"
+#include "platform/animation/CompositorAnimationTimeline.h"
 #include "platform/geometry/IntRect.h"
 #include "platform/geometry/LayoutRect.h"
 #include "platform/graphics/Color.h"
 #include "platform/graphics/GraphicsLayerClient.h"
 #include "platform/scroll/ScrollTypes.h"
 #include "platform/scroll/Scrollbar.h"
 #include "public/platform/ShapeProperties.h"
 #include "public/platform/WebDisplayMode.h"
 #include "public/platform/WebRect.h"
 #include "wtf/Allocator.h"
@@ skipping 759 matching lines @@
   void mapQuadToAncestorFrameIncludingScrollOffset(
       LayoutRect&,
       const LayoutObject* descendant,
       const LayoutView* ancestor,
       MapCoordinatesFlags mode);
 
   bool mapToVisualRectInTopFrameSpace(LayoutRect&);
 
   void applyTransformForTopFrameSpace(TransformState&);
 
+  // TODO(kenrb): These are temporary methods pending resolution of
+  // https://crbug.com/680606. Animation timelines and hosts for scrolling
+  // are normally owned by ScrollingCoordinator, but there is only one
+  // of those objects per page. To get around this, we temporarily stash a
+  // unique timeline and host on each OOPIF FrameView.
+  void setAnimationTimeline(std::unique_ptr<CompositorAnimationTimeline>);
+  void setAnimationHost(std::unique_ptr<CompositorAnimationHost>);
+
  protected:
   // Scroll the content via the compositor.
   bool scrollContentsFastPath(const IntSize& scrollDelta);
 
   // Scroll the content by invalidating everything.
   void scrollContentsSlowPath();
 
   ScrollBehavior scrollBehaviorStyle() const override;
 
   void scrollContentsIfNeeded();
@@ skipping 351 matching lines @@
   std::unique_ptr<PaintController> m_paintController;
   std::unique_ptr<PaintArtifactCompositor> m_paintArtifactCompositor;
 
   bool m_isStoringCompositedLayerDebugInfo;
   MainThreadScrollingReasons m_mainThreadScrollingReasons;
   // For recording main thread scrolling reasons
   // due to layout object properties. e.g. opacity, transform.
   // The size of the vector depends on the number of
   // main thread scrolling reasons.
   Vector<int> m_mainThreadScrollingReasonsCounter;
+
+  // TODO(kenrb): Remove these when https://crbug.com/680606 is resolved.
+  std::unique_ptr<CompositorAnimationTimeline> m_animationTimeline;
+  std::unique_ptr<CompositorAnimationHost> m_animationHost;
 };
 
 inline void FrameView::incrementVisuallyNonEmptyCharacterCount(unsigned count) {
   if (m_isVisuallyNonEmpty)
     return;
   m_visuallyNonEmptyCharacterCount += count;
   // Use a threshold value to prevent very small amounts of visible content from
   // triggering didMeaningfulLayout.  The first few hundred characters rarely
   // contain the interesting content of the page.
   static const unsigned visualCharacterThreshold = 200;
@@ skipping 20 matching lines @@
                   widget.isFrameView());
 DEFINE_TYPE_CASTS(FrameView,
                   ScrollableArea,
                   scrollableArea,
                   scrollableArea->isFrameView(),
                   scrollableArea.isFrameView());
 
 }  // namespace blink
 
 #endif  // FrameView_h