Introduce the iOS consumer API.

ios/consume/base/util.mm

+// Copyright 2013 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 "base/ios/ios_util.h"
+#include "ios/consume/public/base/util.h"
+
+namespace ios {
+namespace base {
+
+bool IsRunningOnIOS6OrLater() {
+  return ::base::ios::IsRunningOnIOS6OrLater();
+}
+
+bool IsRunningOnOrLater(int major, int minor, int bug_fix) {
+  return ::base::ios::IsRunningOnOrLater(major, minor, bug_fix);
+}
+
+}  // namespace base
+}  // namespace ios