Add a chrome://flags item "allow-insecure-websocket-from-https-origin"

content/renderer/render_view_impl.cc

Index: content/renderer/render_view_impl.cc
diff --git a/content/renderer/render_view_impl.cc b/content/renderer/render_view_impl.cc
index cf16222a557fb347343025f57071af484c634a1d..209b05c22d6d9b3350dd4e695e2b9c5a71315f19 100644
--- a/content/renderer/render_view_impl.cc
+++ b/content/renderer/render_view_impl.cc
@@ -775,6 +775,9 @@ void RenderViewImpl::Initialize(
 
   ApplyWebPreferences(webkit_preferences_, webview());
 
+  webview()->settings()->setAllowConnectingInsecureWebSocket(
+      command_line.HasSwitch(switches::kAllowInsecureWebSocketFromHttpsOrigin));
+
   main_render_frame_.reset(main_render_frame);
   webview()->setMainFrame(main_render_frame_->GetWebFrame());
   main_render_frame_->Initialize();