Revert of Remove Client= from device/serial/data_stream.mojom.

extensions/renderer/resources/serial_service.js

Index: extensions/renderer/resources/serial_service.js
diff --git a/extensions/renderer/resources/serial_service.js b/extensions/renderer/resources/serial_service.js
index be232144050366e4b039d44c43da63a2669266b3..d0f29761b03adc47d4b8dda17b4a88c814e22aec 100644
--- a/extensions/renderer/resources/serial_service.js
+++ b/extensions/renderer/resources/serial_service.js
@@ -134,17 +134,14 @@
       clientOptions.bufferSize = options.bufferSize;
   };
 
-  function Connection(connection, router, receivePipe, receiveClientPipe,
-                      sendPipe, sendClientPipe, id, options) {
+  function Connection(connection, router, receivePipe, sendPipe, id, options) {
     var state = new serialization.ConnectionState();
     state.connectionId = id;
     updateClientOptions(state, options);
     var receiver = new dataReceiver.DataReceiver(
-        receivePipe, receiveClientPipe, state.bufferSize,
-        serialMojom.ReceiveError.DISCONNECTED);
-    var sender =
-        new dataSender.DataSender(sendPipe, sendClientPipe, state.bufferSize,
-                                  serialMojom.SendError.DISCONNECTED);
+        receivePipe, state.bufferSize, serialMojom.ReceiveError.DISCONNECTED);
+    var sender = new dataSender.DataSender(
+        sendPipe, state.bufferSize, serialMojom.SendError.DISCONNECTED);
     this.init_(state,
                connection,
                router,
@@ -190,16 +187,12 @@
     var serviceOptions = getServiceOptions(options);
     var pipe = core.createMessagePipe();
     var sendPipe = core.createMessagePipe();
-    var sendPipeClient = core.createMessagePipe();
     var receivePipe = core.createMessagePipe();
-    var receivePipeClient = core.createMessagePipe();
     service.connect(path,
                     serviceOptions,
                     pipe.handle0,
                     sendPipe.handle0,
-                    sendPipeClient.handle0,
-                    receivePipe.handle0,
-                    receivePipeClient.handle0);
+                    receivePipe.handle0);
     var router = new routerModule.Router(pipe.handle1);
     var connection = new serialMojom.Connection.proxyClass(router);
     return connection.getInfo().then(convertServiceInfo).then(function(info) {
@@ -207,9 +200,7 @@
     }).catch(function(e) {
       router.close();
       core.close(sendPipe.handle1);
-      core.close(sendPipeClient.handle1);
       core.close(receivePipe.handle1);
-      core.close(receivePipeClient.handle1);
       throw e;
     }).then(function(results) {
       var info = results[0];
@@ -217,9 +208,7 @@
       var serialConnectionClient = new Connection(connection,
                                                   router,
                                                   receivePipe.handle1,
-                                                  receivePipeClient.handle1,
                                                   sendPipe.handle1,
-                                                  sendPipeClient.handle1,
                                                   id,
                                                   options);
       var clientInfo = serialConnectionClient.getClientInfo_();