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

components/sync/engine_impl/commit_util.cc

Index: components/sync/engine_impl/commit_util.cc
diff --git a/components/sync/engine_impl/commit_util.cc b/components/sync/engine_impl/commit_util.cc
index a2c2a4a8a971461923c592a10e360e17d9c485fb..26ac3cdd160f9410606c63a709168bbcc20c80b4 100644
--- a/components/sync/engine_impl/commit_util.cc
+++ b/components/sync/engine_impl/commit_util.cc
@@ -16,10 +16,10 @@
 #include "components/sync/base/attachment_id_proto.h"
 #include "components/sync/base/time.h"
 #include "components/sync/base/unique_position.h"
+#include "components/sync/engine_impl/cycle/sync_cycle.h"

[skym, 2016/08/19 17:17:42]

I don't think this import actually does anything, you should be able to remove.

[maxbogue, 2016/08/19 19:12:00]

Removed.

 #include "components/sync/engine_impl/syncer_proto_util.h"
 #include "components/sync/protocol/bookmark_specifics.pb.h"
 #include "components/sync/protocol/sync.pb.h"
-#include "components/sync/sessions_impl/sync_session.h"
 #include "components/sync/syncable/directory.h"
 #include "components/sync/syncable/entry.h"
 #include "components/sync/syncable/model_neutral_mutable_entry.h"
@@ -51,7 +51,7 @@ void AddExtensionsActivityToMessage(
   //
   // We will push this list of extensions activity back into the
   // ExtensionsActivityMonitor if this commit fails.  That's why we must keep a
-  // copy of these records in the session.
+  // copy of these records in the cycle.
   activity->GetAndClearRecords(extensions_activity_buffer);
 
   const ExtensionsActivity::Records& records = *extensions_activity_buffer;