Preserving Content-Type header from http request in OpenURL path.

content/browser/frame_host/render_frame_proxy_host.cc

Index: content/browser/frame_host/render_frame_proxy_host.cc
diff --git a/content/browser/frame_host/render_frame_proxy_host.cc b/content/browser/frame_host/render_frame_proxy_host.cc
index 34f364fb4c58d6467cca527e8f49ad475ef08ea1..51274591bbe183a2e78beab78b3e4046c5b9e700 100644
--- a/content/browser/frame_host/render_frame_proxy_host.cc
+++ b/content/browser/frame_host/render_frame_proxy_host.cc
@@ -261,11 +261,15 @@ void RenderFrameProxyHost::OnOpenURL(
 
   // TODO(alexmos, creis): Figure out whether |params.user_gesture| needs to be
   // passed in as well.
+  // TODO(lfg, lukasza): Remove |extra_headers| parameter from
+  // RequestTransferURL method once both RenderFrameProxyHost and
+  // RenderFrameHostImpl call RequestOpenURL from their OnOpenURL handlers.
+  // See also https://crbug.com/647772.
   frame_tree_node_->navigator()->RequestTransferURL(
       current_rfh, validated_url, site_instance_.get(), std::vector<GURL>(),
       params.referrer, ui::PAGE_TRANSITION_LINK, GlobalRequestID(),
       params.should_replace_current_entry, params.uses_post ? "POST" : "GET",
-      params.resource_request_body);
+      params.resource_request_body, params.extra_headers);
 }
 
 void RenderFrameProxyHost::OnRouteMessageEvent(