Improve WebGL architecture.

components/canvas_traits/webgl_channel/ipc.rs

@@ -0,0 +1,15 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+use ipc_channel;
+use serde::{Deserialize, Serialize};
+use std::io;
+
+pub type WebGLSender<T> = ipc_channel::ipc::IpcSender<T>;
+pub type WebGLReceiver<T> = ipc_channel::ipc::IpcReceiver<T>;
+
+pub fn webgl_channel<T: Serialize + for<'de> Deserialize<'de>>()
+        -> Result<(WebGLSender<T>, WebGLReceiver<T>), io::Error> {
+    ipc_channel::ipc::channel()
+}