SdchObserver: add OnDictionary{Added,Removed}

net/sdch/sdch_owner.h

Index: net/sdch/sdch_owner.h
diff --git a/net/sdch/sdch_owner.h b/net/sdch/sdch_owner.h
index 04b83a1875aaeb90702b87805d12fc20be5f1d64..ec5d82d1224c8db4f0a8e53d7778355cdeb5b580 100644
--- a/net/sdch/sdch_owner.h
+++ b/net/sdch/sdch_owner.h
@@ -56,12 +56,13 @@ class NET_EXPORT SdchOwner : public SdchObserver, public PrefStore::Observer {
   void SetMinSpaceForDictionaryFetch(size_t min_space_for_dictionary_fetch);
 
   // SdchObserver implementation.
-  void OnDictionaryUsed(SdchManager* manager,
-                        const std::string& server_hash) override;
-  void OnGetDictionary(SdchManager* manager,
-                       const GURL& request_url,
+  void OnDictionaryAdded(const GURL& dictionary_url,
+                         const std::string& server_hash) override;
+  void OnDictionaryRemoved(const std::string& server_hash) override;
+  void OnDictionaryUsed(const std::string& server_hash) override;
+  void OnGetDictionary(const GURL& request_url,
                        const GURL& dictionary_url) override;
-  void OnClearDictionaries(SdchManager* manager) override;
+  void OnClearDictionaries() override;
 
   // PrefStore::Observer implementation.
   void OnPrefValueChanged(const std::string& key) override;