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

components/sync_sessions/sessions_sync_manager.cc

Index: components/sync_sessions/sessions_sync_manager.cc
diff --git a/components/sync_sessions/sessions_sync_manager.cc b/components/sync_sessions/sessions_sync_manager.cc
index 67efecf8c069b4ef8eb88a6ea7a963335e7ded28..24bb773090ce79b002d9244a884e5f8588241e62 100644
--- a/components/sync_sessions/sessions_sync_manager.cc
+++ b/components/sync_sessions/sessions_sync_manager.cc
@@ -25,8 +25,8 @@
 #include "components/variations/variations_associated_data.h"
 
 using sessions::SerializedNavigationEntry;
-using sync_driver::DeviceInfo;
-using sync_driver::LocalDeviceInfoProvider;
+using syncer::DeviceInfo;
+using syncer::LocalDeviceInfoProvider;
 using syncer::SyncChange;
 using syncer::SyncData;
 
@@ -80,7 +80,7 @@ std::string TagFromSpecifics(const sync_pb::SessionSpecifics& specifics) {
 // lifetime of SessionSyncManager.
 SessionsSyncManager::SessionsSyncManager(
     sync_sessions::SyncSessionsClient* sessions_client,
-    sync_driver::SyncPrefs* sync_prefs,
+    syncer::SyncPrefs* sync_prefs,
     LocalDeviceInfoProvider* local_device,
     std::unique_ptr<LocalSessionEventRouter> router,
     const base::Closure& sessions_updated_callback,