Fixed behavior of the bookmark bar visibility.

chrome/browser/bookmarks/bookmark_model.cc

Index: chrome/browser/bookmarks/bookmark_model.cc
diff --git a/chrome/browser/bookmarks/bookmark_model.cc b/chrome/browser/bookmarks/bookmark_model.cc
index 18bb942634bbef2690ff2c309bdbd2174d864480..3b3d45b74dfac51770cfefbc63b74f5aecea4f4f 100644
--- a/chrome/browser/bookmarks/bookmark_model.cc
+++ b/chrome/browser/bookmarks/bookmark_model.cc
@@ -124,6 +124,9 @@ BookmarkModel::BookmarkModel(Profile* profile)
   if (!profile_) {
     // Profile is null during testing.
     DoneLoading(CreateLoadDetails());
+  } else {
+    pref_change_registrar_.Init(profile_->GetPrefs());
+    pref_change_registrar_.Add(prefs::kShowBookmarkBar, this);
   }
 }
 
@@ -792,6 +795,20 @@ void BookmarkModel::Observe(int type,
       break;
     }
 
+    case chrome::NOTIFICATION_PREF_CHANGED: {
+      std::string* pref = Details<std::string>(details).ptr();
+      if (*pref == prefs::kShowBookmarkBar) {
+        Source<Profile> source(profile_);
+        NotificationService::current()->Notify(
+            chrome::NOTIFICATION_BOOKMARK_BAR_VISIBILITY_PREF_CHANGED,
+            source,
+            NotificationService::NoDetails());
+      } else {
+        NOTREACHED();
+      }
+      break;
+    }
+
     default:
       NOTREACHED();
       break;