Remove / clarify references to iOS in chrome/.

Change-Id: I45224f299e5ac7fcff88241c7a5e0689603717cf
Reviewed-on: https://chromium-review.googlesource.com/1189545
Reviewed-by: Ramin Halavati <[email protected]>
Commit-Queue: Lei Zhang <[email protected]>
Cr-Commit-Position: refs/heads/master@{#586380}
diff --git a/chrome/browser/prefs/pref_service_syncable_util.cc b/chrome/browser/prefs/pref_service_syncable_util.cc
index 855391c..6d86f89 100644
--- a/chrome/browser/prefs/pref_service_syncable_util.cc
+++ b/chrome/browser/prefs/pref_service_syncable_util.cc
@@ -4,7 +4,7 @@
 
 #include "chrome/browser/prefs/pref_service_syncable_util.h"
 
-#include <vector>
+#include <utility>
 
 #include "chrome/browser/prefs/pref_service_incognito_whitelist.h"
 #include "chrome/browser/profiles/profile.h"
@@ -28,9 +28,9 @@
     sync_preferences::PrefServiceSyncable* pref_service,
     PrefStore* incognito_extension_pref_store,
     std::unique_ptr<PrefValueStore::Delegate> delegate) {
-
   // TODO(https://crbug.com/861722): Current implementation does not cover
-  // preferences from iOS. The code should be refactored to cover it.
+  // preferences from iOS. The code should be refactored to cover it. e.g. Moved
+  // to components/ so it can be used on iOS.
 
   return pref_service->CreateIncognitoPrefService(
       incognito_extension_pref_store,