Make TabContents own its infobar delegates....

chrome/browser/tab_contents/test_tab_contents.h

Index: chrome/browser/tab_contents/test_tab_contents.h
===================================================================
--- chrome/browser/tab_contents/test_tab_contents.h	(revision 65711)
+++ chrome/browser/tab_contents/test_tab_contents.h	(working copy)
@@ -31,13 +31,6 @@
   // alternatives without using command-line switches.
   bool ShouldTransitionCrossSite() { return transition_cross_site; }
 
-  // Overrides TabContents::Observe.  We are listening to infobar related
-  // notifications so we can call InfoBarClosed() on the infobar delegates to
-  // prevent them from leaking.
-  virtual void Observe(NotificationType type,
-                       const NotificationSource& source,
-                       const NotificationDetails& details);
-
   // Promote DidNavigate to public.
   void TestDidNavigate(RenderViewHost* render_view_host,
                        const ViewHostMsg_FrameNavigate_Params& params) {
@@ -73,8 +66,6 @@
 
   // Set by individual tests.
   bool transition_cross_site;
-
-  NotificationRegistrar registrar_;
 };
 
 #endif  // CHROME_BROWSER_TAB_CONTENTS_TEST_TAB_CONTENTS_H_