SdchObserver: add OnDictionary{Added,Removed}

net/base/sdch_manager.cc

Index: net/base/sdch_manager.cc
diff --git a/net/base/sdch_manager.cc b/net/base/sdch_manager.cc
index c43c8b08c955afa6c441ce5ffbf89408e074abd0..bdb553d8a7aa044773efa6db00d6e647c2f1ed87 100644
--- a/net/base/sdch_manager.cc
+++ b/net/base/sdch_manager.cc
@@ -448,6 +448,10 @@ SdchProblemCode SdchManager::AddSdchDictionary(
   if (server_hash_p)
     *server_hash_p = server_hash;
 
+  FOR_EACH_OBSERVER(SdchObserver,
+                    observers_,
+                    OnDictionaryAdded(this, dictionary_url, server_hash));
+
   return SDCH_OK;
 }
 
@@ -457,6 +461,11 @@ SdchProblemCode SdchManager::RemoveSdchDictionary(
     return SDCH_DICTIONARY_HASH_NOT_FOUND;
 
   dictionaries_.erase(server_hash);
+
+  FOR_EACH_OBSERVER(SdchObserver,
+                    observers_,
+                    OnDictionaryRemoved(this, server_hash));
+
   return SDCH_OK;
 }