favor DCHECK_CURRENTLY_ON for better logs in chrome/browser/autocomplete,banners,background

chrome/browser/banners/app_banner_data_fetcher.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_data_fetcher.h"
 
 #include "base/bind.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/banners/app_banner_metrics.h"
@@ skipping 57 matching lines @@
     content::WebContents* web_contents,
     base::WeakPtr<Delegate> delegate,
     int ideal_icon_size)
     : WebContentsObserver(web_contents),
       ideal_icon_size_(ideal_icon_size),
       weak_delegate_(delegate),
       is_active_(false) {
 }
 
 void AppBannerDataFetcher::Start(const GURL& validated_url) {
-  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
 
   content::WebContents* web_contents = GetWebContents();
   DCHECK(web_contents);
 
   is_active_ = true;
   validated_url_ = validated_url;
   web_contents->GetManifest(
       base::Bind(&AppBannerDataFetcher::OnDidGetManifest, this));
 }
 
 void AppBannerDataFetcher::Cancel() {
-  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   if (is_active_) {
     FOR_EACH_OBSERVER(Observer, observer_list_,
                       OnDecidedWhetherToShow(this, false));
     is_active_ = false;
   }
 }
 
 void AppBannerDataFetcher::ReplaceWebContents(
     content::WebContents* web_contents) {
   Observe(web_contents);
@@ skipping 252 matching lines @@
   if (!manifest.start_url.is_valid())
     return false;
   if (manifest.name.is_null() && manifest.short_name.is_null())
     return false;
   if (!DoesManifestContainRequiredIcon(manifest))
     return false;
   return true;
 }
 
 }  // namespace banners