Log source_dependency in HTTP2_SESSION_SEND_HEADERS.

net/http/http_stream_factory_impl_job.cc

Index: net/http/http_stream_factory_impl_job.cc
diff --git a/net/http/http_stream_factory_impl_job.cc b/net/http/http_stream_factory_impl_job.cc
index d50d24fe13707a6db60bb9cf4537ce6273b2a6aa..78be8a5b71db04bb7af772f66ee3420621446d6c 100644
--- a/net/http/http_stream_factory_impl_job.cc
+++ b/net/http/http_stream_factory_impl_job.cc
@@ -1186,7 +1186,8 @@ int HttpStreamFactoryImpl::Job::SetSpdyHttpStreamOrBidirectionalStreamImpl(
   if (delegate_->for_websockets())
     return ERR_NOT_IMPLEMENTED;
   if (stream_type_ == HttpStreamRequest::BIDIRECTIONAL_STREAM) {
-    bidirectional_stream_impl_.reset(new BidirectionalStreamSpdyImpl(session));
+    bidirectional_stream_impl_.reset(
+        new BidirectionalStreamSpdyImpl(session, net_log_.source()));
     return OK;
   }
 
@@ -1196,7 +1197,8 @@ int HttpStreamFactoryImpl::Job::SetSpdyHttpStreamOrBidirectionalStreamImpl(
 
   bool use_relative_url =
       direct || request_info_.url.SchemeIs(url::kHttpsScheme);
-  stream_.reset(new SpdyHttpStream(session, use_relative_url));
+  stream_.reset(
+      new SpdyHttpStream(session, use_relative_url, net_log_.source()));
   return OK;
 }