Remove PrefObserver usages, batch 12.

chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.h

Index: chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.h
diff --git a/chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.h b/chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.h
index b1505f6b5a22bb6a996e499359b2dde97dda3a25..30322416086b469fa5847e2d016d69c98f7e17e9 100644
--- a/chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.h
+++ b/chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.h
@@ -13,7 +13,6 @@
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "base/memory/weak_ptr.h"
-#include "base/prefs/public/pref_observer.h"
 #include "chrome/browser/api/prefs/pref_member.h"
 #include "chrome/browser/extensions/image_loading_tracker.h"
 #include "chrome/browser/ui/browser.h"
@@ -46,8 +45,7 @@ class ZoomDecoration;
 class LocationBarViewMac : public LocationBar,
                            public LocationBarTesting,
                            public OmniboxEditController,
-                           public content::NotificationObserver,
-                           public PrefObserver {
+                           public content::NotificationObserver {
  public:
   LocationBarViewMac(AutocompleteTextField* field,
                      CommandUpdater* command_updater,
@@ -180,10 +178,6 @@ class LocationBarViewMac : public LocationBar,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
-  // PrefObserver:
-  virtual void OnPreferenceChanged(PrefServiceBase* service,
-                                   const std::string& pref_name) OVERRIDE;
-
   Browser* browser() const { return browser_; }
 
  private:
@@ -196,6 +190,8 @@ class LocationBarViewMac : public LocationBar,
   // Clear the page-action decorations.
   void DeletePageActionDecorations();
 
+  void OnEditBookmarksEnabledChanged();
+
   // Re-generate the page-action decorations from the profile's
   // extension service.
   void RefreshPageActionDecorations();