Revert 89864 - Don't rely on user gestures for deciding when to dismiss infobars.

chrome/browser/tab_contents/infobar_delegate.cc

Index: chrome/browser/tab_contents/infobar_delegate.cc
===================================================================
--- chrome/browser/tab_contents/infobar_delegate.cc	(revision 91739)
+++ chrome/browser/tab_contents/infobar_delegate.cc	(working copy)
@@ -21,7 +21,10 @@
 
 bool InfoBarDelegate::ShouldExpire(
     const content::LoadCommittedDetails& details) const {
-  if (!details.is_navigation_to_different_page())
+  // Only hide InfoBars when the user has done something that makes the main
+  // frame load. We don't want various automatic or subframe navigations making
+  // it disappear.
+  if (!details.is_user_initiated_main_frame_load())
     return false;
 
   return ShouldExpireInternal(details);