Move bookmark_pref_names.* into bookmarks namespace.

chrome/browser/extensions/api/bookmarks/bookmark_apitest.cc

Index: chrome/browser/extensions/api/bookmarks/bookmark_apitest.cc
diff --git a/chrome/browser/extensions/api/bookmarks/bookmark_apitest.cc b/chrome/browser/extensions/api/bookmarks/bookmark_apitest.cc
index 14dc9e18964e7a7c12fa29d9491b62b42c5bc898..56b75e71c38f64436d3a086e1d78036b4c488d85 100644
--- a/chrome/browser/extensions/api/bookmarks/bookmark_apitest.cc
+++ b/chrome/browser/extensions/api/bookmarks/bookmark_apitest.cc
@@ -39,7 +39,7 @@ IN_PROC_BROWSER_TEST_F(ExtensionApiTest, MAYBE_Bookmarks) {
   node->SetString("name", "Managed Folder");
   node->Set("children", new base::ListValue());
   list.Append(node);
-  profile->GetPrefs()->Set(prefs::kManagedBookmarks, list);
+  profile->GetPrefs()->Set(bookmarks::prefs::kManagedBookmarks, list);
   ASSERT_EQ(2, client->managed_node()->child_count());
 
   ASSERT_TRUE(RunExtensionTest("bookmarks")) << message_;