Remove PrefObserver usages, batch 13.

chrome/browser/ui/webui/options/password_manager_handler.h

Index: chrome/browser/ui/webui/options/password_manager_handler.h
diff --git a/chrome/browser/ui/webui/options/password_manager_handler.h b/chrome/browser/ui/webui/options/password_manager_handler.h
index 4a1436ede4533a2406f868312f4da1ce37855694..eaa9767038382677bbc98dc4cc4e2bc9202bc4a8 100644
--- a/chrome/browser/ui/webui/options/password_manager_handler.h
+++ b/chrome/browser/ui/webui/options/password_manager_handler.h
@@ -9,7 +9,6 @@
 #include <vector>
 
 #include "base/memory/scoped_vector.h"
-#include "base/prefs/public/pref_observer.h"
 #include "chrome/browser/api/prefs/pref_member.h"
 #include "chrome/browser/password_manager/password_store.h"
 #include "chrome/browser/password_manager/password_store_consumer.h"
@@ -22,8 +21,7 @@ struct PasswordForm;
 namespace options {
 
 class PasswordManagerHandler : public OptionsPageUIHandler,
-                               public PasswordStore::Observer,
-                               public PrefObserver {
+                               public PasswordStore::Observer {
  public:
   PasswordManagerHandler();
   virtual ~PasswordManagerHandler();
@@ -36,10 +34,6 @@ class PasswordManagerHandler : public OptionsPageUIHandler,
   // PasswordStore::Observer implementation.
   virtual void OnLoginsChanged() OVERRIDE;
 
-  // PrefObserver implementation.
-  virtual void OnPreferenceChanged(PrefServiceBase* service,
-                                   const std::string& pref_name) OVERRIDE;
-
  private:
   // The password store associated with the currently active profile.
   PasswordStore* GetPasswordStore();