[Sync] Move //components/sync to the syncer namespace.

components/sync/core_impl/test/test_internal_components_factory.cc

Index: components/sync/core_impl/test/test_internal_components_factory.cc
diff --git a/components/sync/core_impl/test/test_internal_components_factory.cc b/components/sync/core_impl/test/test_internal_components_factory.cc
index e99b0c612ad82e4f2097cbc0b953f21a1303935f..b6ab6c147f89241bf8a809ff9af431d97352c2d1 100644
--- a/components/sync/core_impl/test/test_internal_components_factory.cc
+++ b/components/sync/core_impl/test/test_internal_components_factory.cc
@@ -25,7 +25,7 @@ TestInternalComponentsFactory::~TestInternalComponentsFactory() {}
 std::unique_ptr<SyncScheduler> TestInternalComponentsFactory::BuildScheduler(
     const std::string& name,
     SyncCycleContext* context,
-    syncer::CancelationSignal* cancelation_signal) {
+    CancelationSignal* cancelation_signal) {
   return std::unique_ptr<SyncScheduler>(new FakeSyncScheduler());
 }