Add command line flag --disable-webrtc-encryption for dev and canary channels

content/renderer/media/media_stream_dependency_factory.cc

Index: content/renderer/media/media_stream_dependency_factory.cc
diff --git a/content/renderer/media/media_stream_dependency_factory.cc b/content/renderer/media/media_stream_dependency_factory.cc
index a8345c2fc7b61f9bd72d43e6967743f158abe88c..ea5b94f6183301db659a8f0a819a2ad26329968e 100644
--- a/content/renderer/media/media_stream_dependency_factory.cc
+++ b/content/renderer/media/media_stream_dependency_factory.cc
@@ -557,6 +557,8 @@ bool MediaStreamDependencyFactory::CreatePeerConnectionFactory() {
       cmd_line->HasSwitch(switches::kEnableWebRtcAecRecordings);
   factory_options.disable_sctp_data_channels=
       cmd_line->HasSwitch(switches::kDisableSCTPDataChannels);
+  factory_options.disable_encryption =
+      cmd_line->HasSwitch(switches::kDisableWebRtcEncryption);
   pc_factory_->SetOptions(factory_options);
   return true;
 }