Adding BrowsingDataPartitionClient

ios/web/public/browsing_data_partition_client.cc

+// Copyright 2015 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 "ios/web/public/browsing_data_partition_client.h"
+
+namespace web {
+
+namespace {
+
+static BrowsingDataPartitionClient* g_client;
+
+}  // namespace
+
+void SetBrowsingDataPartitionClient(BrowsingDataPartitionClient* client) {
+  g_client = client;
+}
+
+BrowsingDataPartitionClient* GetBrowsingDataPartitionClient() {
+  return g_client;
+}
+
+BrowsingDataPartitionClient::BrowsingDataPartitionClient() {}
+BrowsingDataPartitionClient::~BrowsingDataPartitionClient() {}
+
+}  // namespace web