Backed out changeset 5b9886673514 (bug 1201541) for android reftest orange CLOSED TREE

layout/base/FrameLayerBuilder.cpp

@@ -2040,6 +2040,9 @@ ContainerState::GetLayerCreationHint(const nsIFrame* aAnimatedGeometryRoot)
 {
   // Check whether the layer will be scrollable. This is used as a hint to
   // influence whether tiled layers are used or not.
+  if (mParameters.mInLowPrecisionDisplayPort) {
+    return LayerManager::SCROLLABLE;
+  }
   nsIFrame* animatedGeometryRootParent = aAnimatedGeometryRoot->GetParent();
   nsIScrollableFrame* scrollable = do_QueryFrame(animatedGeometryRootParent);
   if (scrollable