Animated scroll shouldn't consume unhandled scrolls for OOPIFs.

cc/trees/layer_tree_settings.h

Index: cc/trees/layer_tree_settings.h
diff --git a/cc/trees/layer_tree_settings.h b/cc/trees/layer_tree_settings.h
index b6237c944470e3f34e38626e90b80eede5ae90cd..81cf806210f9e15dc898a5918c376b14c67d4520 100644
--- a/cc/trees/layer_tree_settings.h
+++ b/cc/trees/layer_tree_settings.h
@@ -110,6 +110,8 @@ class CC_EXPORT LayerTreeSettings {
   // Indicates that the LayerTreeHost should defer commits unless it has a valid
   // LocalSurfaceId set.
   bool enable_surface_synchronization = false;
+
+  bool is_layer_tree_for_subframe = false;

[Charlie Reis, 2017/04/18 21:59:03]

Similarly, worth a comment if this actually means OOPIFs and not all subframes.

[wjmaclean, 2017/04/18 23:26:49]

Done.

 };
 
 }  // namespace cc