Switch to null root property tree nodes [spv2]

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

Index: third_party/WebKit/Source/core/frame/FrameView.h
diff --git a/third_party/WebKit/Source/core/frame/FrameView.h b/third_party/WebKit/Source/core/frame/FrameView.h
index 464953ad0d065036ef9cc5aaa9a588a63fabdee8..8278f9c87aeb724eba9c42c5fe9951a3f89adf41 100644
--- a/third_party/WebKit/Source/core/frame/FrameView.h
+++ b/third_party/WebKit/Source/core/frame/FrameView.h
@@ -41,7 +41,6 @@
 #include "platform/geometry/LayoutRect.h"
 #include "platform/graphics/Color.h"
 #include "platform/graphics/paint/ClipPaintPropertyNode.h"
-#include "platform/graphics/paint/EffectPaintPropertyNode.h"
 #include "platform/graphics/paint/ScrollPaintPropertyNode.h"
 #include "platform/graphics/paint/TransformPaintPropertyNode.h"
 #include "platform/scroll/ScrollTypes.h"
@@ -607,17 +606,6 @@ public:
     void setContentClip(PassRefPtr<ClipPaintPropertyNode> contentClip) { m_contentClip = contentClip; }
     ClipPaintPropertyNode* contentClip() const { return m_contentClip.get(); }
 
-    // We store no-op paint property tree nodes at the root of the tree.
-    // TODO(pdr): Remove this concept in favor of null nodes, see: crbug.com/645615
-    void setRootTransform(PassRefPtr<TransformPaintPropertyNode> rootTransform) { m_rootTransform = rootTransform; }
-    TransformPaintPropertyNode* rootTransform() const { return m_rootTransform.get(); }
-    void setRootClip(PassRefPtr<ClipPaintPropertyNode> rootClip) { m_rootClip = rootClip; }
-    ClipPaintPropertyNode* rootClip() const { return m_rootClip.get(); }
-    void setRootEffect(PassRefPtr<EffectPaintPropertyNode> rootEffect) { m_rootEffect = rootEffect; }
-    EffectPaintPropertyNode* rootEffect() const { return m_rootEffect.get(); }
-    void setRootScroll(PassRefPtr<ScrollPaintPropertyNode> rootScroll) { m_rootScroll = rootScroll; }
-    ScrollPaintPropertyNode* rootScroll() const { return m_rootScroll.get(); }
-
     // TODO(ojan): Merge this with IntersectionObserver once it lands.
     IntRect computeVisibleArea();
 
@@ -929,13 +917,6 @@ private:
     // TODO(trchen): This will not be needed once settings->rootLayerScrolls() is enabled.
     RefPtr<ClipPaintPropertyNode> m_contentClip;
 
-    // These nodes represent the root nodes of each property tree.
-    // Only the root frame should create them and they will be no-op.
-    RefPtr<TransformPaintPropertyNode> m_rootTransform;
-    RefPtr<ClipPaintPropertyNode> m_rootClip;
-    RefPtr<EffectPaintPropertyNode> m_rootEffect;
-    RefPtr<ScrollPaintPropertyNode> m_rootScroll;
-
     // This is set on the local root frame view only.
     DocumentLifecycle::LifecycleState m_currentUpdateLifecyclePhasesTargetState;