sync: move internal_api components used by chrome/browser into internal_api/public

sync/notifier/non_blocking_invalidation_notifier_unittest.cc

Index: sync/notifier/non_blocking_invalidation_notifier_unittest.cc
diff --git a/sync/notifier/non_blocking_invalidation_notifier_unittest.cc b/sync/notifier/non_blocking_invalidation_notifier_unittest.cc
index 4ac250412cb21da98dd2269b99310d2c35ddbfc7..42cc5d172193533e04de06d0d559b7889e2d327e 100644
--- a/sync/notifier/non_blocking_invalidation_notifier_unittest.cc
+++ b/sync/notifier/non_blocking_invalidation_notifier_unittest.cc
@@ -12,9 +12,9 @@
 #include "net/url_request/url_request_test_util.h"
 #include "sync/internal_api/public/syncable/model_type.h"
 #include "sync/internal_api/public/syncable/model_type_payload_map.h"
+#include "sync/internal_api/public/util/weak_handle.h"
 #include "sync/notifier/invalidation_state_tracker.h"
 #include "sync/notifier/mock_sync_notifier_observer.h"
-#include "sync/util/weak_handle.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"