Remove PrefObserver usages, batch 10.

chrome/browser/ui/webui/ntp/ntp_resource_cache.h

Index: chrome/browser/ui/webui/ntp/ntp_resource_cache.h
diff --git a/chrome/browser/ui/webui/ntp/ntp_resource_cache.h b/chrome/browser/ui/webui/ntp/ntp_resource_cache.h
index 83bfab24ab1af481837cf7d575f013468629bc83..c8ee03b71df2c5d3a196e182df305d044821bccb 100644
--- a/chrome/browser/ui/webui/ntp/ntp_resource_cache.h
+++ b/chrome/browser/ui/webui/ntp/ntp_resource_cache.h
@@ -9,7 +9,6 @@
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/prefs/public/pref_change_registrar.h"
-#include "base/prefs/public/pref_observer.h"
 #include "base/string16.h"
 #include "chrome/browser/profiles/profile_keyed_service.h"
 #include "content/public/browser/notification_observer.h"
@@ -24,7 +23,6 @@ class RefCountedMemory;
 // This class keeps a cache of NTP resources (HTML and CSS) so we don't have to
 // regenerate them all the time.
 class NTPResourceCache : public content::NotificationObserver,
-                         public PrefObserver,
                          public ProfileKeyedService {
  public:
   explicit NTPResourceCache(Profile* profile);
@@ -38,34 +36,34 @@ class NTPResourceCache : public content::NotificationObserver,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
-  // PrefObserver interface.
-  virtual void OnPreferenceChanged(PrefServiceBase* service,
-                                   const std::string& pref_name) OVERRIDE;
-
  private:
-  Profile* profile_;
+  void OnPreferenceChanged();
 
   void CreateNewTabHTML();
-  scoped_refptr<base::RefCountedMemory> new_tab_html_;
 
   // Helper to determine if the resource cache should be invalidated.
   // This is called on every page load, and can be used to check values that
   // don't generate a notification when changed (e.g., system preferences).
   bool NewTabCacheNeedsRefresh();
 
+  Profile* profile_;
+
+  scoped_refptr<base::RefCountedMemory> new_tab_html_;
+
 #if !defined(OS_ANDROID)
   // Returns a message describing any newly-added sync types, or an empty
   // string if all types have already been acknowledged.
   string16 GetSyncTypeMessage();
 
   void CreateNewTabIncognitoHTML();
-  scoped_refptr<base::RefCountedMemory> new_tab_incognito_html_;
 
   void CreateNewTabIncognitoCSS();
-  scoped_refptr<base::RefCountedMemory> new_tab_incognito_css_;
+
   void CreateNewTabCSS();
-  scoped_refptr<base::RefCountedMemory> new_tab_css_;
 
+  scoped_refptr<base::RefCountedMemory> new_tab_incognito_html_;
+  scoped_refptr<base::RefCountedMemory> new_tab_incognito_css_;
+  scoped_refptr<base::RefCountedMemory> new_tab_css_;
   content::NotificationRegistrar registrar_;
   PrefChangeRegistrar pref_change_registrar_;
 #endif