Not for review - Rebase of crrev.com/62833003

Source/core/rendering/compositing/CompositingReasonFinder.cpp

Index: Source/core/rendering/compositing/CompositingReasonFinder.cpp
diff --git a/Source/core/rendering/compositing/CompositingReasonFinder.cpp b/Source/core/rendering/compositing/CompositingReasonFinder.cpp
index f703878f56e136b87eccd63c3313ae87c2c1227f..e107c5a0887650f36351cd089bedd0f59641c666 100644
--- a/Source/core/rendering/compositing/CompositingReasonFinder.cpp
+++ b/Source/core/rendering/compositing/CompositingReasonFinder.cpp
@@ -147,6 +147,10 @@ CompositingReasons CompositingReasonFinder::nonStyleDeterminedDirectReasons(cons
     if (requiresCompositingForPositionFixed(layer))
         directReasons |= CompositingReasonPositionFixed;
 
+    Node* node = layer->renderer()->node();
+    if (node->isElementNode() && toElement(node)->hasBoundAnimatedProperty())
+        directReasons |= CompositingReasonTeleport;
+
     directReasons |= renderer->additionalCompositingReasons();
 
     ASSERT(!(directReasons & CompositingReasonComboAllStyleDeterminedReasons));