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

content/browser/frame_host/render_frame_host_manager.cc

Index: content/browser/frame_host/render_frame_host_manager.cc
diff --git a/content/browser/frame_host/render_frame_host_manager.cc b/content/browser/frame_host/render_frame_host_manager.cc
index 46ddfa26acfde24fcf4f5a1b1d834452f8fe95b2..8c2e7e4f4070c7f9ce5de798fa03cec14f0e1f9b 100644
--- a/content/browser/frame_host/render_frame_host_manager.cc
+++ b/content/browser/frame_host/render_frame_host_manager.cc
@@ -463,7 +463,8 @@ void RenderFrameHostManager::OnCrossSiteResponse(
           referrer, page_transition, global_request_id,
           should_replace_current_entry,
           transfer_navigation_handle_->IsPost() ? "POST" : "GET",
-          transfer_navigation_handle_->resource_request_body());
+          transfer_navigation_handle_->resource_request_body(),
+          std::string() /* extra_headers */);
 
   // If the navigation continued, the NavigationHandle should have been
   // transfered to a RenderFrameHost. In the other cases, it should be cleared.