Disable AltSvc from insecure origin.

net/http/http_stream_factory_impl.cc

Index: net/http/http_stream_factory_impl.cc
diff --git a/net/http/http_stream_factory_impl.cc b/net/http/http_stream_factory_impl.cc
index fb9181cd316709acfbe3464775dce2fed8aaa92d..744b9807785c3bd325be7ae85c8e5a2a9c009ae6 100644
--- a/net/http/http_stream_factory_impl.cc
+++ b/net/http/http_stream_factory_impl.cc
@@ -217,6 +217,10 @@ AlternativeService HttpStreamFactoryImpl::GetAlternativeServiceForInternal(
   if (original_url.SchemeIs("ftp"))
     return AlternativeService();
 
+  if (!session_->params().enable_alternative_service_for_insecure_origins &&
+      !original_url.SchemeIs("https"))

[Ryan Hamilton, 2016/05/31 23:43:42]

nit: I think this should probably have {}s since the if is more than one line.

[Bence, 2016/06/01 10:54:38]

Sorry, I missed this.  Will do in a follow-up.

+    return AlternativeService();
+
   url::SchemeHostPort origin(original_url);
   HttpServerProperties& http_server_properties =
       *session_->http_server_properties();