Support XCode's "Right to Left Pseudolanguage" on iOS.

base/ios/ios_util.h

 // 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.
 
 #ifndef BASE_IOS_IOS_UTIL_H_
 #define BASE_IOS_IOS_UTIL_H_
 
 #include "base/base_export.h"
 #include "base/basictypes.h"
 
 namespace base {
 namespace ios {
 
 // Returns whether the operating system is iOS 8 or later.
 BASE_EXPORT bool IsRunningOnIOS8OrLater();
 
 // Returns whether the operating system is iOS 9 or later.
 BASE_EXPORT bool IsRunningOnIOS9OrLater();
 
 // Returns whether the operating system is at the given version or later.
 BASE_EXPORT bool IsRunningOnOrLater(int32 major, int32 minor, int32 bug_fix);
 
+// Returns whether iOS is signalling that an RTL text direction should be used
+// regardless of the current locale.
+BASE_EXPORT bool IsInForcedRTL();
+
 }  // namespace ios
 }  // namespace base
 
 #endif  // BASE_IOS_IOS_UTIL_H_