Add ManagedUserService for profile-specific managed user data.

chrome/browser/managed_mode/managed_mode_navigation_observer.h

Index: chrome/browser/managed_mode/managed_mode_navigation_observer.h
diff --git a/chrome/browser/managed_mode/managed_mode_navigation_observer.h b/chrome/browser/managed_mode/managed_mode_navigation_observer.h
index 53ab1c9b5a24d751cd0ed4b81703d1cb7f9ac144..3fb4bd329a0ba3c470511753e78ffef0ab661e7a 100644
--- a/chrome/browser/managed_mode/managed_mode_navigation_observer.h
+++ b/chrome/browser/managed_mode/managed_mode_navigation_observer.h
@@ -13,6 +13,7 @@
 
 class InfoBarDelegate;
 class ManagedModeURLFilter;
+class ManagedUserService;
 
 class ManagedModeNavigationObserver
     : public content::WebContentsObserver,
@@ -106,7 +107,10 @@ class ManagedModeNavigationObserver
       content::PageTransition transition_type,
       content::RenderViewHost* render_view_host) OVERRIDE;
 
-  // Owned by ManagedMode (which is a singleton and outlives us).
+  // Owned by the profile, so outlives us.
+  ManagedUserService* managed_user_service_;
+
+  // Owned by ManagedUserService.
   const ManagedModeURLFilter* url_filter_;
 
   // Owned by the InfoBarService, which has the same lifetime as this object.