Transfer user agent override info between browser and renderer

chrome/browser/prerender/prerender_contents.cc

Index: chrome/browser/prerender/prerender_contents.cc
diff --git a/chrome/browser/prerender/prerender_contents.cc b/chrome/browser/prerender/prerender_contents.cc
index 033e64e1f2ce28636b388545bb196debc8fc41b0..107bc5b819f39f64f606d757995c982d1a0bd821 100644
--- a/chrome/browser/prerender/prerender_contents.cc
+++ b/chrome/browser/prerender/prerender_contents.cc
@@ -369,12 +369,18 @@ void PrerenderContents::StartPrerendering(
   DCHECK(load_start_time_.is_null());
   load_start_time_ = base::TimeTicks::Now();
 
-  new_contents->GetController().LoadURL(
+  // Transfer over the user agent override.
+  new_contents->SetUserAgentOverride(
+      prerender_manager_->config().user_agent_override);
+
+  new_contents->GetController().LoadURLWithUserAgentOverride(
       prerender_url_,
       referrer_,
       (origin_ == ORIGIN_OMNIBOX ? content::PAGE_TRANSITION_TYPED :
                                    content::PAGE_TRANSITION_LINK),
-      std::string());
+      false,
+      std::string(),
+      prerender_manager_->config().is_overriding_user_agent);
 }
 
 bool PrerenderContents::GetChildId(int* child_id) const {