[Sync] Move change-related methods out of SyncManager::Observer

chrome/browser/sync/syncable/syncable.cc

Index: chrome/browser/sync/syncable/syncable.cc
diff --git a/chrome/browser/sync/syncable/syncable.cc b/chrome/browser/sync/syncable/syncable.cc
index 700ff57dfbe80ef7e91b733945a39784e0c1060d..fd030b1360889224bde1254f08231e0235a42ffb 100644
--- a/chrome/browser/sync/syncable/syncable.cc
+++ b/chrome/browser/sync/syncable/syncable.cc
@@ -90,8 +90,6 @@ std::string WriterTagToString(WriterTag writer_tag) {
 
 #undef ENUM_CASE
 
-namespace {
-
 DictionaryValue* EntryKernelMutationToValue(
     const EntryKernelMutation& mutation) {
   DictionaryValue* dict = new DictionaryValue();
@@ -100,8 +98,6 @@ DictionaryValue* EntryKernelMutationToValue(
   return dict;
 }
 
-}  // namespace
-
 ListValue* EntryKernelMutationMapToValue(
     const EntryKernelMutationMap& mutations) {
   ListValue* list = new ListValue();
@@ -1248,14 +1244,14 @@ ModelTypeBitSet WriteTransaction::NotifyTransactionChangingAndEnding(
   DirectoryChangeDelegate* const delegate = dirkernel_->delegate;
   if (writer_ == syncable::SYNCAPI) {
     delegate->HandleCalculateChangesChangeEventFromSyncApi(
-        mutations.Get(), this);
+        mutations, this);
   } else {
     delegate->HandleCalculateChangesChangeEventFromSyncer(
-        mutations.Get(), this);
+        mutations, this);
   }
 
   ModelTypeBitSet models_with_changes =
-      delegate->HandleTransactionEndingChangeEvent(this);
+      delegate->HandleTransactionEndingChangeEvent(mutations, this);
 
   dirkernel_->observers->Notify(
       &TransactionObserver::OnTransactionMutate,