[Sync] Clean up intra-sync DEPS significantly.

components/sync/driver/ui_model_type_controller_unittest.cc

Index: components/sync/driver/ui_model_type_controller_unittest.cc
diff --git a/components/sync/driver/ui_model_type_controller_unittest.cc b/components/sync/driver/ui_model_type_controller_unittest.cc
index 2a7668f7de8d5437a7137c5ba87f4323b4a42f21..eedab9609702f30f1558511fef51c1ffcf96f2ff 100644
--- a/components/sync/driver/ui_model_type_controller_unittest.cc
+++ b/components/sync/driver/ui_model_type_controller_unittest.cc
@@ -20,7 +20,7 @@
 #include "components/sync/core/shared_model_type_processor.h"
 #include "components/sync/driver/backend_data_type_configurer.h"
 #include "components/sync/driver/fake_sync_client.h"
-#include "components/sync/engine_impl/commit_queue.h"
+#include "components/sync/engine/commit_queue.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace sync_driver_v2 {
@@ -62,8 +62,7 @@ class MockSyncBackend {
       syncer::ModelType type,
       std::unique_ptr<syncer_v2::ActivationContext> activation_context) {
     enabled_types_.Put(type);
-    activation_context->type_processor->ConnectSync(
-        base::WrapUnique(new NullCommitQueue()));
+    activation_context->type_processor->ConnectSync(nullptr);
   }
 
   void Disconnect(syncer::ModelType type) {