[Sync] Move sessions/ to engine/cycle/ and rename things to match.

components/sync/engine/cycle/status_counters.h

Index: components/sync/engine/cycle/status_counters.h
diff --git a/components/sync/sessions/status_counters.h b/components/sync/engine/cycle/status_counters.h
similarity index 77%
rename from components/sync/sessions/status_counters.h
rename to components/sync/engine/cycle/status_counters.h
index ddb3b861ea184fbb83a8a7d0826a035cabda4e0c..da7d9833a3ec91a2a4d9cfbbd770243f4a3bb0c5 100644
--- a/components/sync/sessions/status_counters.h
+++ b/components/sync/engine/cycle/status_counters.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef COMPONENTS_SYNC_SESSIONS_STATUS_COUNTERS_H_
-#define COMPONENTS_SYNC_SESSIONS_STATUS_COUNTERS_H_
+#ifndef COMPONENTS_SYNC_ENGINE_CYCLE_STATUS_COUNTERS_H_
+#define COMPONENTS_SYNC_ENGINE_CYCLE_STATUS_COUNTERS_H_
 
 #include <stddef.h>
 
@@ -28,4 +28,4 @@ struct StatusCounters {
 
 }  // namespace syncer
 
-#endif  // COMPONENTS_SYNC_SESSIONS_STATUS_COUNTERS_H_
+#endif  // COMPONENTS_SYNC_ENGINE_CYCLE_STATUS_COUNTERS_H_