compositing: Make the constellation messages serializable.

1 files changed, 2 insertions, 2 deletions

diff --git a/components/compositing/compositor_task.rs b/components/compositing/compositor_task.rs
index d8ada04bbdf..b9738685f6b 100644
--- a/components/compositing/compositor_task.rs
+++ b/components/compositing/compositor_task.rs
@@ -13,7 +13,7 @@ use windowing::{WindowEvent, WindowMethods};
 
 use euclid::point::Point2D;
 use euclid::rect::Rect;
-use ipc_channel::ipc::IpcReceiver;
+use ipc_channel::ipc::{IpcReceiver, IpcSender};
 use layers::platform::surface::NativeDisplay;
 use layers::layers::{BufferRequest, LayerBuffer, LayerBufferSet};
 use msg::compositor_msg::{Epoch, LayerId, LayerProperties, FrameTreeId};
@@ -183,7 +183,7 @@ pub enum Msg {
     /// Changes the cursor.
     SetCursor(Cursor),
     /// Composite to a PNG file and return the Image over a passed channel.
-    CreatePng(Sender<Option<png::Image>>),
+    CreatePng(IpcSender<Option<png::Image>>),
     /// Informs the compositor that the paint task for the given pipeline has exited.
     PaintTaskExited(PipelineId),
     /// Alerts the compositor that the viewport has been constrained in some manner