[Sync] Remove unneeded 'using syncer::' lines and 'syncer::' scopings

sync/internal_api/syncapi_internal.cc

Index: sync/internal_api/syncapi_internal.cc
diff --git a/sync/internal_api/syncapi_internal.cc b/sync/internal_api/syncapi_internal.cc
index 282082b223c508185d60dc133fa0ab26f93b8e3d..a6530ac87b5b82281406919af1ea31fd2074b709 100644
--- a/sync/internal_api/syncapi_internal.cc
+++ b/sync/internal_api/syncapi_internal.cc
@@ -9,8 +9,6 @@
 #include "sync/protocol/sync.pb.h"
 #include "sync/util/cryptographer.h"
 
-using syncer::Cryptographer;
-
 namespace syncer {
 
 sync_pb::PasswordSpecificsData* DecryptPasswordSpecifics(
@@ -54,7 +52,7 @@ bool IsNameServerIllegalAfterTrimming(const std::string& name) {
 }
 
 // Compare the values of two EntitySpecifics, accounting for encryption.
-bool AreSpecificsEqual(const syncer::Cryptographer* cryptographer,
+bool AreSpecificsEqual(const Cryptographer* cryptographer,
                        const sync_pb::EntitySpecifics& left,
                        const sync_pb::EntitySpecifics& right) {
   // Note that we can't compare encrypted strings directly as they are seeded