Move infobar handling to a tab helper.

chrome/browser/alternate_nav_url_fetcher.cc

Index: chrome/browser/alternate_nav_url_fetcher.cc
diff --git a/chrome/browser/alternate_nav_url_fetcher.cc b/chrome/browser/alternate_nav_url_fetcher.cc
index 655526113537d0244a0707eaf6a1a23c83c7d1ae..4edac9539e9f60881b1cde54cb048be5be8d7fef 100644
--- a/chrome/browser/alternate_nav_url_fetcher.cc
+++ b/chrome/browser/alternate_nav_url_fetcher.cc
@@ -5,6 +5,7 @@
 #include "chrome/browser/alternate_nav_url_fetcher.h"
 
 #include "base/utf_string_conversions.h"
+#include "chrome/browser/infobars/infobar_tab_helper.h"
 #include "chrome/browser/intranet_redirect_detector.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
@@ -166,5 +167,5 @@ void AlternateNavURLFetcher::ShowInfobarIfPossible() {
   infobar_contents_ = controller_->tab_contents();
   StoreActiveEntryUniqueID(infobar_contents_);
   TabContentsWrapper::GetCurrentWrapperForContents(infobar_contents_)->
-      AddInfoBar(this);
+      infobar_tab_helper()->AddInfoBar(this);
 }