RefCounted types should not have public destructors, Linux fixes

chrome/browser/password_manager/password_store_default_unittest.cc

 // Copyright (c) 2012 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 "base/basictypes.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/stl_util.h"
 #include "base/string_util.h"
 #include "base/synchronization/waitable_event.h"
@@ skipping 46 matching lines @@
     DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
     BrowserThread::PostTask(
         BrowserThread::DB,
         FROM_HERE,
         base::Bind(&DBThreadObserverHelper::AddObserverTask,
                    this,
                    make_scoped_refptr(password_store)));
     done_event_.Wait();
   }
 
-  virtual ~DBThreadObserverHelper() {
-    DCHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
-    registrar_.RemoveAll();
-  }
-
   content::NotificationObserverMock& observer() {
     return observer_;
   }
 
  protected:
-  friend class base::RefCountedThreadSafe<DBThreadObserverHelper>;
+  friend struct BrowserThread::DeleteOnThread<BrowserThread::DB>;
+  friend class base::DeleteHelper<DBThreadObserverHelper>;
+
+  virtual ~DBThreadObserverHelper() {
+    DCHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
+    registrar_.RemoveAll();
+  }
 
   void AddObserverTask(PasswordStore* password_store) {
     DCHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
     registrar_.Add(&observer_,
                    chrome::NOTIFICATION_LOGINS_CHANGED,
                    content::Source<PasswordStore>(password_store));
     done_event_.Signal();
   }
 
   WaitableEvent done_event_;
@@ skipping 176 matching lines @@
   // Deleting the login should trigger a notification.
   store->RemoveLogin(*form);
 
   // Wait for PasswordStore to send the notification.
   BrowserThread::PostTask(BrowserThread::DB, FROM_HERE,
       base::Bind(&WaitableEvent::Signal, base::Unretained(&done)));
   done.Wait();
 
   store->ShutdownOnUIThread();
 }