Switch to standard integer types in chrome/browser/, part 1 of 4.

chrome/browser/android/offline_pages/offline_page_mhtml_archiver.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/android/offline_pages/offline_page_mhtml_archiver.h"
 
 #include "base/base64.h"
 #include "base/bind.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
@@ skipping 96 matching lines @@
       archives_dir.Append(GenerateFileName(url, base::UTF16ToUTF8(title))));
 
   web_contents_->GenerateMHTML(
       file_path, base::Bind(&OfflinePageMHTMLArchiver::OnGenerateMHTMLDone,
                             weak_ptr_factory_.GetWeakPtr(), url, file_path));
 }
 
 void OfflinePageMHTMLArchiver::OnGenerateMHTMLDone(
     const GURL& url,
     const base::FilePath& file_path,
-    int64 file_size) {
+    int64_t file_size) {
   if (file_size < 0) {
     ReportFailure(ArchiverResult::ERROR_ARCHIVE_CREATION_FAILED);
   } else {
     callback_.Run(this, ArchiverResult::SUCCESSFULLY_CREATED, url, file_path,
                   file_size);
   }
 }
 
 void OfflinePageMHTMLArchiver::ReportFailure(ArchiverResult result) {
   DCHECK(result != ArchiverResult::SUCCESSFULLY_CREATED);
   callback_.Run(this, result, GURL(), base::FilePath(), 0);
 }
 
 }  // namespace offline_pages