Switch to standard integer types in chrome/browser/, part 2 of 4.

chrome/browser/media_galleries/gallery_watch_manager.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/media_galleries/gallery_watch_manager.h"
 
+#include <stddef.h>
+
 #include <tuple>
 
 #include "base/bind.h"
+#include "base/macros.h"
 #include "base/stl_util.h"
 #include "base/time/time.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/media_galleries/gallery_watch_manager_observer.h"
 #include "chrome/browser/media_galleries/media_file_system_registry.h"
 #include "chrome/browser/media_galleries/media_galleries_preferences_factory.h"
 #include "chrome/browser/profiles/profile.h"
 #include "components/keyed_service/content/browser_context_keyed_service_shutdown_notifier_factory.h"
 #include "components/storage_monitor/storage_monitor.h"
 #include "content/public/browser/browser_context.h"
@@ skipping 467 matching lines @@
       DeactivateFileWatch(owner, it->second);
       // Post increment moves iterator to next element while deleting current.
       watches_.erase(it++);
       observers_[preferences->profile()]->OnGalleryWatchDropped(
           owner.extension_id, owner.gallery_id);
     } else {
       ++it;
     }
   }
 }