Remove implicit conversions from scoped_refptr to T* in chrome/browser/ui/

chrome/browser/ui/omnibox/omnibox_navigation_observer.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 "chrome/browser/ui/omnibox/omnibox_navigation_observer.h"
 
 #include "chrome/browser/autocomplete/shortcuts_backend.h"
 #include "chrome/browser/autocomplete/shortcuts_backend_factory.h"
 #include "chrome/browser/infobars/infobar_service.h"
 #include "chrome/browser/intranet_redirect_detector.h"
@@ skipping 59 matching lines @@
   // We need to start by listening to AllSources, since we don't know which tab
   // the navigation might occur in.
   registrar_.Add(this, content::NOTIFICATION_NAV_ENTRY_PENDING,
                  content::NotificationService::AllSources());
 }
 
 OmniboxNavigationObserver::~OmniboxNavigationObserver() {
 }
 
 void OmniboxNavigationObserver::OnSuccessfulNavigation() {
-  if (shortcuts_backend_)
+  if (shortcuts_backend_.get())
     shortcuts_backend_->AddOrUpdateShortcut(text_, match_);
 }
 
 void OmniboxNavigationObserver::Observe(
     int type,
     const content::NotificationSource& source,
     const content::NotificationDetails& details) {
   DCHECK_EQ(content::NOTIFICATION_NAV_ENTRY_PENDING, type);
   registrar_.Remove(this, content::NOTIFICATION_NAV_ENTRY_PENDING,
                     content::NotificationService::AllSources());
@@ skipping 49 matching lines @@
     OnAllLoadingFinished();  // deletes |this|!
 }
 
 void OmniboxNavigationObserver::OnAllLoadingFinished() {
   if (fetch_state_ == FETCH_SUCCEEDED) {
     AlternateNavInfoBarDelegate::Create(
         web_contents(), text_, alternate_nav_match_, match_.destination_url);
   }
   delete this;
 }