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

chrome/browser/apps/drive/drive_app_mapping.cc

 // Copyright 2014 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/apps/drive/drive_app_mapping.h"
 
+#include <stddef.h>
+
 #include "base/prefs/pref_service.h"
 #include "base/prefs/scoped_user_pref_update.h"
 #include "base/values.h"
 #include "chrome/common/pref_names.h"
 #include "components/pref_registry/pref_registry_syncable.h"
 
 namespace {
 
 // Key for a string value that holds the mapped chrome app id.
 const char kKeyChromeApp[] = "chrome_app";
@@ skipping 141 matching lines @@
     uninstalled_app_ids_.insert(app_id);
   }
 }
 
 void DriveAppMapping::UpdateUninstalledList() {
   ListPrefUpdate update(prefs_, prefs::kAppLauncherUninstalledDriveApps);
   update->Clear();
   for (const auto& app_id : uninstalled_app_ids_)
     update->AppendString(app_id);
 }