Move sticky position constraints update to the pre-paint tree walk.

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

Index: third_party/WebKit/Source/core/frame/FrameView.cpp
diff --git a/third_party/WebKit/Source/core/frame/FrameView.cpp b/third_party/WebKit/Source/core/frame/FrameView.cpp
index de2724a16ae7e58e013cde03ec403efd8a4e5f0e..3c3793b39b691fa24a814ec85e075ca622f584ed 100644
--- a/third_party/WebKit/Source/core/frame/FrameView.cpp
+++ b/third_party/WebKit/Source/core/frame/FrameView.cpp
@@ -2939,12 +2939,6 @@ void FrameView::updatePaintProperties() {
     frameView.lifecycle().advanceTo(DocumentLifecycle::InPrePaint);
   });
 
-  // TODO(chrishtr): merge this into the actual pre-paint tree walk.
-  if (RuntimeEnabledFeatures::slimmingPaintV2Enabled())
-    forAllNonThrottledFrameViews([](FrameView& frameView) {
-      CompositingInputsUpdater(frameView.layoutView()->layer()).update();
-    });
-
   if (RuntimeEnabledFeatures::slimmingPaintInvalidationEnabled())
     PrePaintTreeWalk().walk(*this);