[Chromoting] Remove DataChannelManagerCallbacks constructor parameter of ClientSession

remoting/host/client_session.cc

Index: remoting/host/client_session.cc
diff --git a/remoting/host/client_session.cc b/remoting/host/client_session.cc
index b98778211272d629494ec1f06572c363ae5af9e6..6a62604ba0ec436dc454b5b37033b65484412a2b 100644
--- a/remoting/host/client_session.cc
+++ b/remoting/host/client_session.cc
@@ -49,9 +49,7 @@ ClientSession::ClientSession(
     const DesktopEnvironmentOptions& desktop_environment_options,
     const base::TimeDelta& max_duration,
     scoped_refptr<protocol::PairingRegistry> pairing_registry,
-    const std::vector<HostExtension*>& extensions,
-    const std::vector<protocol::DataChannelManager::NameCallbackPair>&
-        data_channel_callbacks)
+    const std::vector<HostExtension*>& extensions)
     : event_handler_(event_handler),
       connection_(std::move(connection)),
       client_jid_(connection_->session()->jid()),
@@ -76,11 +74,6 @@ ClientSession::ClientSession(
   // Create a manager for the configured extensions, if any.
   extension_manager_.reset(new HostExtensionSessionManager(extensions, this));
 
-  for (const auto& callback : data_channel_callbacks) {
-    data_channel_manager_.RegisterCreateHandlerCallback(callback.first,
-                                                        callback.second);
-  }
-
 #if defined(OS_WIN)
   // LocalInputMonitorWin filters out an echo of the injected input before it
   // reaches |remote_input_filter_|.
@@ -416,6 +409,13 @@ ClientSessionControl* ClientSession::session_control() {
   return this;
 }
 
+void ClientSession::RegisterDataChannelManagerCallback(
+    const std::string& prefix,
+    protocol::DataChannelManager::CreateHandlerCallback constructor) {
+  data_channel_manager_.RegisterCreateHandlerCallback(
+      prefix, std::move(constructor));
+}
+
 void ClientSession::SetEventTimestampsSourceForTests(
     scoped_refptr<protocol::InputEventTimestampsSource>
         event_timestamp_source) {