sync: Move unique_client_tag hashing code

sync/internal_api/base_node.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "sync/internal_api/public/base_node.h"
 
 #include <stack>
 
-#include "base/base64.h"
-#include "base/sha1.h"
 #include "base/string_number_conversions.h"
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
 #include "sync/internal_api/public/base_transaction.h"
 #include "sync/internal_api/syncapi_internal.h"
 #include "sync/protocol/app_specifics.pb.h"
 #include "sync/protocol/autofill_specifics.pb.h"
 #include "sync/protocol/bookmark_specifics.pb.h"
 #include "sync/protocol/extension_specifics.pb.h"
 #include "sync/protocol/nigori_specifics.pb.h"
@@ skipping 37 matching lines @@
       EndsWithSpace(server_name)) {
     --length_to_copy;
   }
   *out = std::string(server_name.c_str(), length_to_copy);
 }
 
 BaseNode::BaseNode() : password_data_(new sync_pb::PasswordSpecificsData) {}
 
 BaseNode::~BaseNode() {}
 
-std::string BaseNode::GenerateSyncableHash(
-    ModelType model_type, const std::string& client_tag) {
-  // Blank PB with just the field in it has termination symbol,
-  // handy for delimiter.
-  sync_pb::EntitySpecifics serialized_type;
-  AddDefaultFieldValue(model_type, &serialized_type);
-  std::string hash_input;
-  serialized_type.AppendToString(&hash_input);
-  hash_input.append(client_tag);
-
-  std::string encode_output;
-  CHECK(base::Base64Encode(base::SHA1HashString(hash_input), &encode_output));
-  return encode_output;
-}
-
 bool BaseNode::DecryptIfNecessary() {
   if (!GetEntry()->Get(syncable::UNIQUE_SERVER_TAG).empty())
       return true;  // Ignore unique folders.
   const sync_pb::EntitySpecifics& specifics =
       GetEntry()->Get(syncable::SPECIFICS);
   if (specifics.has_password()) {
     // Passwords have their own legacy encryption structure.
     scoped_ptr<sync_pb::PasswordSpecificsData> data(DecryptPasswordSpecifics(
         specifics, GetTransaction()->GetCryptographer()));
     if (!data.get()) {
@@ skipping 279 matching lines @@
     const sync_pb::EntitySpecifics& specifics) {
   ModelType type = GetModelTypeFromSpecifics(specifics);
   DCHECK_NE(UNSPECIFIED, type);
   if (GetModelType() != UNSPECIFIED) {
     DCHECK_EQ(GetModelType(), type);
   }
   unencrypted_data_.CopyFrom(specifics);
 }
 
 }  // namespace syncer