Introduce the iOS consumer API.

ios/consumer/public/base/util.h

Index: ios/consumer/public/base/util.h
diff --git a/ios/consumer/public/base/util.h b/ios/consumer/public/base/util.h
new file mode 100644
index 0000000000000000000000000000000000000000..c3d339a7a5eda20a5fc2e1ddd5209ac4bdf41b3d
--- /dev/null
+++ b/ios/consumer/public/base/util.h
@@ -0,0 +1,20 @@
+// 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.
+
+#ifndef IOS_CONSUME_PUBLIC_BASE_UTIL_H_
+#define IOS_CONSUME_PUBLIC_BASE_UTIL_H_
+
+namespace ios {
+namespace base {

[darin (slow to review), 2013/05/28 21:00:09]

I recommend avoiding nested namespaces.  I especially recommend avoiding using
"base" as a nested namespace.  Having to type ::base to access code in src/base/
kind of sucks.

Also, it seems a bit humorous that the implementation of ::ios::base code
involves calling methods defined in ::base::ios ;-)

How about just using ios as the namespace or ios_consumer?

+
+// Returns whether the operating system is iOS 6 or later.
+bool IsRunningOnIOS6OrLater();
+
+// Returns whether the operating system is at the given version or later.
+bool IsRunningOnOrLater(int major, int minor, int bug_fix);
+
+}  // namespace base
+}  // namespace ios
+
+#endif  // IOS_CONSUME_PUBLIC_BASE_UTIL_H_