[Sync] Move some things from driver to base.

components/sync/base/system_encryptor.h

Index: components/sync/base/system_encryptor.h
diff --git a/components/sync/driver/system_encryptor.h b/components/sync/base/system_encryptor.h
similarity index 81%
rename from components/sync/driver/system_encryptor.h
rename to components/sync/base/system_encryptor.h
index 4b7aceca1ba9612768c720f52662d692da3dd8f3..b7824209bfaa264f6b13516bcc1f4efd314ae9d1 100644
--- a/components/sync/driver/system_encryptor.h
+++ b/components/sync/base/system_encryptor.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_DRIVER_SYSTEM_ENCRYPTOR_H_
-#define COMPONENTS_SYNC_DRIVER_SYSTEM_ENCRYPTOR_H_
+#ifndef COMPONENTS_SYNC_BASE_SYSTEM_ENCRYPTOR_H_
+#define COMPONENTS_SYNC_BASE_SYSTEM_ENCRYPTOR_H_
 
 #include <string>
 
@@ -26,4 +26,4 @@ class SystemEncryptor : public Encryptor {
 
 }  // namespace syncer
 
-#endif  // COMPONENTS_SYNC_DRIVER_SYSTEM_ENCRYPTOR_H_
+#endif  // COMPONENTS_SYNC_BASE_SYSTEM_ENCRYPTOR_H_