Pass DomContentLoaded event from prerenders to launching elements.

chrome/browser/prerender/prerender_link_manager.cc

Index: chrome/browser/prerender/prerender_link_manager.cc
diff --git a/chrome/browser/prerender/prerender_link_manager.cc b/chrome/browser/prerender/prerender_link_manager.cc
index 8213dedd8701b4abb3250e952cc564b2297ef250..2c089e03ffcf5138546b90fa1b8f9604da79dc61 100644
--- a/chrome/browser/prerender/prerender_link_manager.cc
+++ b/chrome/browser/prerender/prerender_link_manager.cc
@@ -439,6 +439,16 @@ void PrerenderLinkManager::OnPrerenderStopLoading(
        new PrerenderMsg_OnPrerenderStopLoading(prerender->prerender_id));
 }
 
+void PrerenderLinkManager::OnPrerenderDomContentLoaded(
+    PrerenderHandle* prerender_handle) {
+  LinkPrerender* prerender = FindByPrerenderHandle(prerender_handle);
+  if (!prerender)
+    return;
+
+  Send(prerender->launcher_child_id,
+       new PrerenderMsg_OnPrerenderDomContentLoaded(prerender->prerender_id));
+}
+
 void PrerenderLinkManager::OnPrerenderStop(
     PrerenderHandle* prerender_handle) {
   LinkPrerender* prerender = FindByPrerenderHandle(prerender_handle);