Cleanup: IWYU for BrowserThread.

content/browser/download/drag_download_util.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/download/drag_download_util.h"
 
+#include <string>
+
 #include "base/bind.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/string_number_conversions.h"
 #include "base/string_util.h"
+#include "base/threading/thread_restrictions.h"
 #include "base/utf_string_conversions.h"
 #include "content/public/browser/browser_thread.h"
 #include "googleurl/src/gurl.h"
 #include "net/base/file_stream.h"
 #include "net/base/net_errors.h"
 
 using content::BrowserThread;
 using net::FileStream;
 
 namespace drag_download_util {
@@ skipping 36 matching lines @@
 FileStream* CreateFileStreamForDrop(FilePath* file_path, net::NetLog* net_log) {
   DCHECK(file_path && !file_path->empty());
 
   scoped_ptr<FileStream> file_stream(new FileStream(net_log));
   const int kMaxSeq = 99;
   for (int seq = 0; seq <= kMaxSeq; seq++) {
     FilePath new_file_path;
     if (seq == 0) {
       new_file_path = *file_path;
     } else {
- #if defined(OS_WIN)
+#if defined(OS_WIN)
       string16 suffix = ASCIIToUTF16("-") + base::IntToString16(seq);
- #else
+#else
       std::string suffix = std::string("-") + base::IntToString(seq);
- #endif
+#endif
       new_file_path = file_path->InsertBeforeExtension(suffix);
     }
 
     // http://crbug.com/110709
     base::ThreadRestrictions::ScopedAllowIO allow_io;
 
     // Explicitly (and redundantly check) for file -- despite the fact that our
     // open won't overwrite -- just to avoid log spew.
     if (!file_util::PathExists(new_file_path) &&
         file_stream->OpenSync(new_file_path, base::PLATFORM_FILE_CREATE |
@@ skipping 24 matching lines @@
       base::Bind(&PromiseFileFinalizer::Cleanup, this));
 }
 
 void PromiseFileFinalizer::OnDownloadAborted() {
   BrowserThread::PostTask(
       BrowserThread::UI, FROM_HERE,
       base::Bind(&PromiseFileFinalizer::Cleanup, this));
 }
 
 }  // namespace drag_download_util