[Sync] Rename csync namespace to syncer

sync/test/engine/mock_connection_manager.cc

Index: sync/test/engine/mock_connection_manager.cc
diff --git a/sync/test/engine/mock_connection_manager.cc b/sync/test/engine/mock_connection_manager.cc
index 95c00f6e6a8fcbba19a95b7a82d66bfe32e2c37b..4683ab7de5e0f86c40464aabb0193e3b2c05a113 100644
--- a/sync/test/engine/mock_connection_manager.cc
+++ b/sync/test/engine/mock_connection_manager.cc
@@ -17,12 +17,12 @@
 #include "sync/test/engine/test_id_factory.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
-using csync::HttpResponse;
-using csync::ServerConnectionManager;
-using csync::ServerConnectionEventListener;
-using csync::ServerConnectionEvent;
-using csync::SyncerProtoUtil;
-using csync::TestIdFactory;
+using syncer::HttpResponse;
+using syncer::ServerConnectionManager;
+using syncer::ServerConnectionEventListener;
+using syncer::ServerConnectionEvent;
+using syncer::SyncerProtoUtil;
+using syncer::TestIdFactory;
 using std::map;
 using std::string;
 using sync_pb::ClientToServerMessage;
@@ -85,7 +85,7 @@ void MockConnectionManager::SetMidCommitObserver(
 bool MockConnectionManager::PostBufferToPath(PostBufferParams* params,
     const string& path,
     const string& auth_token,
-    csync::ScopedServerStatusWatcher* watcher) {
+    syncer::ScopedServerStatusWatcher* watcher) {
   ClientToServerMessage post;
   CHECK(post.ParseFromString(params->buffer_in));
   CHECK(post.has_protocol_version());