Switch BookmarkFaviconFetcher to the TaskScheduler API.

chrome/browser/bookmarks/bookmark_html_writer.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/bookmarks/bookmark_html_writer.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
 
 #include "base/base64.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/files/file.h"
+#include "base/lazy_instance.h"

[gab, 2017/07/20 19:11:14]

unused

[Sébastien Marchand, 2017/07/21 15:45:25]

Done.

 #include "base/location.h"
 #include "base/macros.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/time/time.h"
 #include "base/values.h"
 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
 #include "chrome/browser/chrome_notification_types.h"
@@ skipping 414 matching lines @@
     for (int i = 0; i < node->child_count(); ++i)
       ExtractUrls(node->GetChild(i));
   }
 }
 
 void BookmarkFaviconFetcher::ExecuteWriter() {
   // BookmarkModel isn't thread safe (nor would we want to lock it down
   // for the duration of the write), as such we make a copy of the
   // BookmarkModel using BookmarkCodec then write from that.
   BookmarkCodec codec;
-  BrowserThread::PostTask(
-      BrowserThread::FILE, FROM_HERE,
+
+  background_io_task_runner_->PostTask(
+      FROM_HERE,
       base::BindOnce(
           &Writer::DoWrite,
           new Writer(codec.Encode(
                          BookmarkModelFactory::GetForBrowserContext(profile_)),
                      path_, favicons_map_.release(), observer_)));
   if (g_fetcher) {
     base::ThreadTaskRunnerHandle::Get()->DeleteSoon(FROM_HERE, g_fetcher);
     g_fetcher = nullptr;
   }
 }
@@ skipping 51 matching lines @@
   // BookmarkModel isn't thread safe (nor would we want to lock it down
   // for the duration of the write), as such we make a copy of the
   // BookmarkModel using BookmarkCodec then write from that.
   if (!g_fetcher) {
     g_fetcher = new BookmarkFaviconFetcher(profile, path, observer);
     g_fetcher->ExportBookmarks();
   }
 }
 
 }  // namespace bookmark_html_writer