Update PasswordManagerBrowserTest to use the new Observer class from InfoBarManager.

components/infobars/core/infobar_manager.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/infobars/core/infobar_manager.h"
 
 #include "base/command_line.h"
 #include "components/infobars/core/infobar.h"
 #include "components/infobars/core/infobars_switches.h"
 
 namespace infobars {
 
+
+// InfoBarManager::Observer ---------------------------------------------------
+
+void InfoBarManager::Observer::OnInfoBarAdded(InfoBar* infobar) {
+}
+
+void InfoBarManager::Observer::OnInfoBarRemoved(InfoBar* infobar,
+                                                bool animate) {
+}
+
+void InfoBarManager::Observer::OnInfoBarReplaced(InfoBar* old_infobar,
+                                                 InfoBar* new_infobar) {
+}
+
+void InfoBarManager::Observer::OnManagerShuttingDown(InfoBarManager* manager) {
+}
+
+
+// InfoBarManager --------------------------------------------------------------
+
 InfoBar* InfoBarManager::AddInfoBar(scoped_ptr<InfoBar> infobar) {
   DCHECK(infobar);
   if (!infobars_enabled_)
     return NULL;
 
   for (InfoBars::const_iterator i(infobars_.begin()); i != infobars_.end();
        ++i) {
     if ((*i)->delegate()->EqualsDelegate(infobar->delegate())) {
       DCHECK_NE((*i)->delegate(), infobar->delegate());
       return NULL;
@@ skipping 109 matching lines @@
   infobars_.erase(i);
 
   // This notification must happen before the call to CloseSoon() below, since
   // observers may want to access |infobar| and that call can delete it.
   NotifyInfoBarRemoved(infobar, animate);
 
   infobar->CloseSoon();
 }
 
 }  // namespace infobars