Implement BroadcastChannel

components/webmessaging/public/interfaces/broadcast_channel.mojom

Index: components/webmessaging/public/interfaces/broadcast_channel.mojom
diff --git a/components/webmessaging/public/interfaces/broadcast_channel.mojom b/components/webmessaging/public/interfaces/broadcast_channel.mojom
new file mode 100644
index 0000000000000000000000000000000000000000..e3d4e54ce391a8ef6ac60a3187dc2cb7e3689617
--- /dev/null
+++ b/components/webmessaging/public/interfaces/broadcast_channel.mojom
@@ -0,0 +1,22 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+module webmessaging.mojom;
+
+import "url/mojo/origin.mojom";
+
+interface BroadcastChannelClient {
+  // Messages are passed as SerializedScriptValue.
+  OnMessage(string message);
+};
+
+interface BroadcastChannelService {
+  // Connect to the channel identified by the |origin| and |name|. Messages can
+  // be sent to the channel using |sender|, and messages to the channel will be
+  // received by |receiver|.
+  // All connections to channels made from the same event loop should be made
+  // through the same BroadcastChannelService to ensure correct ordering of
+  // messages.
+  ConnectToChannel(url.mojom.Origin origin, string name, associated BroadcastChannelClient receiver, associated BroadcastChannelClient& sender);

[kinuko, 2016/06/09 09:14:58]

nit: can you wrap the line?

[Marijn Kruisselbrink, 2016/06/22 18:46:56]

Done (somebody really should add a mojom style guide to
https://www.chromium.org/developers/coding-style imho...)

+};