Remove dependency of infobars component on the embedder

chrome/browser/infobars/infobar_service.cc

Index: chrome/browser/infobars/infobar_service.cc
diff --git a/chrome/browser/infobars/infobar_service.cc b/chrome/browser/infobars/infobar_service.cc
index 5037cc8fc008ef47c621188a110ac1089b77caf1..3e80ac9317158c55f64447dd3e4d744a686d4af4 100644
--- a/chrome/browser/infobars/infobar_service.cc
+++ b/chrome/browser/infobars/infobar_service.cc
@@ -95,6 +95,9 @@ void InfoBarService::NotifyInfoBarRemoved(InfoBar* infobar, bool animate) {
       content::Details<InfoBar::RemovedDetails>(&removed_details));
 }
 
+// InfoBarService::CreateConfirmInfoBar() is implemented in platform-specific
+// files.
+
 void InfoBarService::RenderProcessGone(base::TerminationStatus status) {
   RemoveAllInfoBars(true);
 }