Switch to standard integer types in components/, part 4 of 4.

components/syncable_prefs/pref_service_syncable.h

Index: components/syncable_prefs/pref_service_syncable.h
diff --git a/components/syncable_prefs/pref_service_syncable.h b/components/syncable_prefs/pref_service_syncable.h
index 81224ac35234a5778ee1d963dcf2b5c7f2720a42..be719aaae168271254ce1889767b7503072e7c8d 100644
--- a/components/syncable_prefs/pref_service_syncable.h
+++ b/components/syncable_prefs/pref_service_syncable.h
@@ -5,9 +5,12 @@
 #ifndef COMPONENTS_SYNCABLE_PREFS_PREF_SERVICE_SYNCABLE_H_
 #define COMPONENTS_SYNCABLE_PREFS_PREF_SERVICE_SYNCABLE_H_
 
+#include <stdint.h>
+
 #include <vector>
 
 #include "base/callback_forward.h"
+#include "base/macros.h"
 #include "base/prefs/pref_service.h"
 #include "components/pref_registry/pref_registry_syncable.h"
 #include "components/syncable_prefs/pref_model_associator.h"
@@ -90,7 +93,7 @@ class PrefServiceSyncable : public PrefService {
  private:
   friend class PrefModelAssociator;
 
-  void AddRegisteredSyncablePreference(const std::string& path, uint32 flags);
+  void AddRegisteredSyncablePreference(const std::string& path, uint32_t flags);
 
   // Invoked internally when the IsSyncing() state changes.
   void OnIsSyncingChanged();