sync: Process client commands on commit response

sync/engine/commit.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "sync/engine/commit.h"
 
 #include "base/debug/trace_event.h"
 #include "sync/engine/build_commit_command.h"
 #include "sync/engine/get_commit_ids_command.h"
 #include "sync/engine/process_commit_response_command.h"
@@ skipping 105 matching lines @@
 
     const size_t num_responses = commit_response.commit().entryresponse_size();
     if (num_responses != commit_set->Size()) {
       LOG(ERROR)
          << "Commit response has wrong number of entries! "
          << "Expected: " << commit_set->Size() << ", "
          << "Got: " << num_responses;
       return SERVER_RESPONSE_VALIDATION_FAILED;
     }
 
+    if (commit_response.has_client_command()) {
+      session->ProcessClientCommand(commit_response.client_command());
+    }
+
     TRACE_EVENT_BEGIN0("sync", "ProcessCommitResponse");
     ProcessCommitResponseCommand process_response_command(
         *commit_set, commit_message, commit_response);
     const SyncerError processing_result =
         process_response_command.Execute(session);
     TRACE_EVENT_END0("sync", "ProcessCommitResponse");
 
     if (processing_result != SYNCER_OK) {
       return processing_result;
     }
@@ skipping 10 matching lines @@
                                 sessions::SyncSession* session) {
   sessions::OrderedCommitSet commit_set(session->routing_info());
   SyncerError result = BuildAndPostCommitsImpl(syncer, session, &commit_set);
   if (result != SYNCER_OK) {
     ClearSyncingBits(session->context()->directory(), commit_set);
   }
   return result;
 }
 
 }  // namespace syncer