Make ExtensionPrefValueMap a ProfileKeyedService.

chrome/browser/profiles/profile_impl.h

Index: chrome/browser/profiles/profile_impl.h
diff --git a/chrome/browser/profiles/profile_impl.h b/chrome/browser/profiles/profile_impl.h
index 83f498b6008ca1a7f9077332919cd28bf29dbda6..7fadbf793ed8ebb9094292981a90d26f1f93215c 100644
--- a/chrome/browser/profiles/profile_impl.h
+++ b/chrome/browser/profiles/profile_impl.h
@@ -23,7 +23,6 @@
 
 class ExtensionNavigationObserver;
 class ExtensionPrefs;
-class ExtensionPrefValueMap;
 class NetPrefObserver;
 class PrefService;
 class PromoResourceService;
@@ -174,11 +173,8 @@ class ProfileImpl : public Profile,
 
   void EnsureSessionServiceCreated();
 
-  ExtensionPrefValueMap* GetExtensionPrefValueMap();
-
   void UpdateProfileUserNameCache();
 
-
   // Updates the ProfileInfoCache with data from this profile.
   void UpdateProfileNameCache();
   void UpdateProfileAvatarCache();
@@ -199,7 +195,6 @@ class ProfileImpl : public Profile,
   //  that the declaration occurs AFTER things it depends on as destruction
   //  happens in reverse order of declaration.
 
-  scoped_ptr<ExtensionPrefValueMap> extension_pref_value_map_;
   // Keep |prefs_| on top for destruction order because |extension_prefs_|,
   // |net_pref_observer_|, |web_resource_service_|, and |io_data_| store
   // pointers to |prefs_| and shall be destructed first.