Fix implicit access to raw pointer of scoped_refptr.

chrome/browser/banners/app_banner_manager.cc

 // Copyright 2015 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/banners/app_banner_manager.h"
 
 #include "chrome/browser/banners/app_banner_data_fetcher.h"
 #include "chrome/browser/banners/app_banner_debug_log.h"
 #include "chrome/browser/banners/app_banner_settings_helper.h"
 #include "content/public/browser/navigation_details.h"
@@ skipping 42 matching lines @@
   CancelActiveFetcher();
 }
 
 void AppBannerManager::ReplaceWebContents(content::WebContents* web_contents) {
   Observe(web_contents);
   if (data_fetcher_.get())
     data_fetcher_.get()->ReplaceWebContents(web_contents);
 }
 
 bool AppBannerManager::IsFetcherActive() {
-  return data_fetcher_ != nullptr && data_fetcher_->is_active();
+  return data_fetcher_ && data_fetcher_->is_active();
 }
 
 void AppBannerManager::DidNavigateMainFrame(
     const content::LoadCommittedDetails& details,
     const content::FrameNavigateParams& params) {
   last_transition_type_ = params.transition;
 }
 
 void AppBannerManager::RequestAppBanner(
     content::RenderFrameHost* render_frame_host,
@@ skipping 35 matching lines @@
 }
 
 bool AppBannerManager::HandleNonWebApp(const std::string& platform,
                                        const GURL& url,
                                        const std::string& id,
                                        bool is_debug_mode) {
   return false;
 }
 
 void AppBannerManager::CancelActiveFetcher() {
-  if (data_fetcher_ != nullptr) {
+  if (data_fetcher_) {
     data_fetcher_->Cancel();
     data_fetcher_ = nullptr;
   }
 }
 
 }  // namespace banners