Add a check to the registry before the intent infobar is shown.

chrome/browser/ui/browser.cc

Index: chrome/browser/ui/browser.cc
diff --git a/chrome/browser/ui/browser.cc b/chrome/browser/ui/browser.cc
index 82188aaaca93d231e4cd101b4dd07f1e3e9b98b7..af125f6c0b0c10482b4fb8cef2ccc83eb912e94e 100644
--- a/chrome/browser/ui/browser.cc
+++ b/chrome/browser/ui/browser.cc
@@ -2597,11 +2597,10 @@ void Browser::RegisterIntentHandlerHelper(TabContents* tab,
   service.action = action;
   service.type = type;
   service.title = title;
-  InfoBarTabHelper* infobar_helper = tcw->infobar_tab_helper();
-  infobar_helper->AddInfoBar(new RegisterIntentHandlerInfoBarDelegate(
-      infobar_helper,
+  RegisterIntentHandlerInfoBarDelegate::MaybeShowIntentInfoBar(
+      tcw->infobar_tab_helper(),
       WebIntentsRegistryFactory::GetForProfile(tcw->profile()),
-      service));
+      service);
 }
 
 // static