components: Move user_prefs into user_prefs namespace.

chrome/browser/bookmarks/bookmark_expanded_state_tracker.cc

Index: chrome/browser/bookmarks/bookmark_expanded_state_tracker.cc
diff --git a/chrome/browser/bookmarks/bookmark_expanded_state_tracker.cc b/chrome/browser/bookmarks/bookmark_expanded_state_tracker.cc
index 2874f222c5d1ff4bdab10506c5c949dba08084f3..11facbfd414606d97b2f991d48606f62f3198597 100644
--- a/chrome/browser/bookmarks/bookmark_expanded_state_tracker.cc
+++ b/chrome/browser/bookmarks/bookmark_expanded_state_tracker.cc
@@ -33,7 +33,7 @@ BookmarkExpandedStateTracker::GetExpandedNodes() {
   if (!bookmark_model_->loaded())
     return nodes;
 
-  PrefService* prefs = components::UserPrefs::Get(browser_context_);
+  PrefService* prefs = user_prefs::UserPrefs::Get(browser_context_);
   if (!prefs)
     return nodes;
 
@@ -95,7 +95,7 @@ void BookmarkExpandedStateTracker::BookmarkAllNodesRemoved(
 }
 
 void BookmarkExpandedStateTracker::UpdatePrefs(const Nodes& nodes) {
-  PrefService* prefs = components::UserPrefs::Get(browser_context_);
+  PrefService* prefs = user_prefs::UserPrefs::Get(browser_context_);
   if (!prefs)
     return;