Inherits SupportsWeakPtr<T> instead of having WeakPtrFactory<T>

content/browser/ssl/ssl_error_handler.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 "content/browser/ssl/ssl_error_handler.h"
 
 #include "base/bind.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/ssl/ssl_cert_error_handler.h"
 #include "content/browser/web_contents/navigation_controller_impl.h"
 #include "content/browser/web_contents/web_contents_impl.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/resource_request_info.h"
 #include "net/base/net_errors.h"
 #include "net/url_request/url_request.h"
 
 using content::BrowserThread;
 using content::RenderViewHostImpl;
 using content::WebContents;
 using net::SSLInfo;
 
-SSLErrorHandler::SSLErrorHandler(base::WeakPtr<Delegate> delegate,
+SSLErrorHandler::SSLErrorHandler(const base::WeakPtr<Delegate>& delegate,
                                  const content::GlobalRequestID& id,
                                  ResourceType::Type resource_type,
                                  const GURL& url,
                                  int render_process_id,
                                  int render_view_id)
     : manager_(NULL),
       request_id_(id),
       delegate_(delegate),
       render_process_id_(render_process_id),
       render_view_id_(render_view_id),
@@ skipping 135 matching lines @@
   // already have been deleted.
   DCHECK(!request_has_been_notified_);
   if (request_has_been_notified_)
     return;
 
   request_has_been_notified_ = true;
 
   // We're done with this object on the IO thread.
   Release();
 }