Add includeInGlobalSearch to Browser bookmarks search.

This will allow bookmarks+history suggestions to show
up in global search without having it hard-coded
in GlobalSearch.SuggestionSources.
diff --git a/res/xml/bookmarks_searchable.xml b/res/xml/bookmarks_searchable.xml
index 1508606..bc6ac93 100644
--- a/res/xml/bookmarks_searchable.xml
+++ b/res/xml/bookmarks_searchable.xml
@@ -21,6 +21,7 @@
     android:inputType="textUri"
     android:imeOptions="actionGo"
 
+    android:includeInGlobalSearch="true"
     android:searchSuggestAuthority="browser"
     android:searchSuggestPath="bookmarks"
     android:searchSuggestSelection="url LIKE ?"