Remove PrefObserver usages, batch 13.

chrome/browser/ui/views/location_bar/location_bar_view.cc

Index: chrome/browser/ui/views/location_bar/location_bar_view.cc
diff --git a/chrome/browser/ui/views/location_bar/location_bar_view.cc b/chrome/browser/ui/views/location_bar/location_bar_view.cc
index 4e150ccde6c56f428064defc9bb6907e458c7335..3a3c56242912321467630f46248f638eaa92c0f5 100644
--- a/chrome/browser/ui/views/location_bar/location_bar_view.cc
+++ b/chrome/browser/ui/views/location_bar/location_bar_view.cc
@@ -202,8 +202,12 @@ LocationBarView::LocationBarView(Browser* browser,
             true));
   }
 
-  edit_bookmarks_enabled_.Init(prefs::kEditBookmarksEnabled,
-                               profile_->GetPrefs(), this);
+  edit_bookmarks_enabled_.Init(
+      prefs::kEditBookmarksEnabled,
+      profile_->GetPrefs(),
+      base::Bind(&LocationBarView::Update,
+                 base::Unretained(this),
+                 static_cast<content::WebContents*>(NULL)));
 }
 
 LocationBarView::~LocationBarView() {
@@ -1511,12 +1515,6 @@ void LocationBarView::Observe(int type,
   }
 }
 
-void LocationBarView::OnPreferenceChanged(PrefServiceBase* service,
-                                          const std::string& pref_name) {
-  if (pref_name == prefs::kEditBookmarksEnabled)
-    Update(NULL);
-}
-
 int LocationBarView::GetInternalHeight(bool use_preferred_size) {
   int total_height =
       use_preferred_size ? GetPreferredSize().height() : height();