[Sync] Rename csync namespace to syncer

sync/test/engine/syncer_command_test.h

Index: sync/test/engine/syncer_command_test.h
diff --git a/sync/test/engine/syncer_command_test.h b/sync/test/engine/syncer_command_test.h
index e519b6b1d78c8ba55791ea6fe4eae3621dbf064a..bcb084626375167cfc3fb9fc0baee42c7d25fabc 100644
--- a/sync/test/engine/syncer_command_test.h
+++ b/sync/test/engine/syncer_command_test.h
@@ -30,9 +30,9 @@
 
 using ::testing::NiceMock;
 
-namespace csync {
+namespace syncer {
 
-class MockDebugInfoGetter : public csync::sessions::DebugInfoGetter {
+class MockDebugInfoGetter : public syncer::sessions::DebugInfoGetter {
  public:
   MockDebugInfoGetter();
   virtual ~MockDebugInfoGetter();
@@ -233,6 +233,6 @@ class MockDirectorySyncerCommandTest : public SyncerCommandTestBase {
   MockDirectory mock_directory_;
 };
 
-}  // namespace csync
+}  // namespace syncer
 
 #endif  // SYNC_TEST_ENGINE_SYNCER_COMMAND_TEST_H_