Bring up minimal sync and sync unittest targets on iOS.

sync/util/get_session_name_ios.mm

Index: sync/util/get_session_name_ios.mm
diff --git a/sync/util/get_session_name_ios.mm b/sync/util/get_session_name_ios.mm
new file mode 100644
index 0000000000000000000000000000000000000000..f9c101b03396c77956bae0e8ed7115b5a400bf42
--- /dev/null
+++ b/sync/util/get_session_name_ios.mm
@@ -0,0 +1,19 @@
+// Copyright 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/util/get_session_name_ios.h"
+
+#import <UIKit/UIKit.h>
+
+#include "base/sys_string_conversions.h"
+
+namespace syncer {
+namespace internal {
+
+std::string GetComputerName() {
+  return base::SysNSStringToUTF8([[UIDevice currentDevice] name]);
+}
+
+}  // namespace internal
+}  // namespace syncer