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

components/sync/syncable/entry.h

Index: components/sync/syncable/entry.h
diff --git a/components/sync/syncable/entry.h b/components/sync/syncable/entry.h
index 38b6fedb7b6999ad0816ef1beefd004062de1229..9124867fff9c48a7e50bb9083dcae3c0ed49eacc 100644
--- a/components/sync/syncable/entry.h
+++ b/components/sync/syncable/entry.h
@@ -15,6 +15,7 @@
 #include "components/sync/syncable/entry_kernel.h"
 
 namespace syncer {
+
 class Cryptographer;
 class ReadNode;
 
@@ -270,7 +271,7 @@ class Entry {
   EntryKernel* kernel_;
 
  private:
-  friend class Directory;
+  friend class syncer::syncable::Directory;
   friend class syncer::ReadNode;
   friend std::ostream& operator<<(std::ostream& s, const Entry& e);