Add serialization support to the JS serial connection client.

To support persistent serial connections on mojo, serial.Connection and
its dependencies must be serializable to mojo structs so it can be
stashed. This adds serialization support to serial.Connection.

BUG=389016

Committed: https://crrev.com/3daad1ed89cd32023624be98edaf051a0043ff5f
Cr-Commit-Position: refs/heads/master@{#298158}

Review URL: https://codereview.chromium.org/592263004

Cr-Commit-Position: refs/heads/master@{#298171}

1 files changed, 31 insertions, 0 deletions

diff --git a/device/serial/serial_serialization.mojom b/device/serial/serial_serialization.mojom
new file mode 100644
index 0000000..77a7ef7
--- /dev/null
+++ b/device/serial/serial_serialization.mojom
@@ -0,0 +1,31 @@
+// Copyright 2014 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.
+
+import "serial.mojom"
+import "data_stream_serialization.mojom"
+
+module device.serial {
+
+// The client state of a serial connection.
+struct ConnectionState {
+  uint32 connectionId;
+  bool paused = false;
+  bool persistent = false;
+  string name = "";
+  uint32 receiveTimeout = 0;
+  uint32 sendTimeout = 0;
+  uint32 bufferSize = 4096;
+};
+
+// A serialized serial connection.
+struct SerializedConnection {
+  ConnectionState state;
+  ReceiveError queuedReceiveError = NONE;
+  array<int8>? queuedReceiveData;
+  Connection connection;
+  SerializedDataSender sender;
+  SerializedDataReceiver receiver;
+};
+
+}