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

base/ios/ios_util.mm

 // 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 "base/ios/ios_util.h"
 
+#import <Foundation/Foundation.h>
+
 #include "base/sys_info.h"
 
 namespace {
 // Return a 3 elements array containing the major, minor and bug fix version of
 // the OS.
 const int32* OSVersionAsArray() {
   int32* digits = new int32[3];
   base::SysInfo::OperatingSystemVersionNumbers(
       &digits[0], &digits[1], &digits[2]);
   return digits;
@@ skipping 15 matching lines @@
 bool IsRunningOnOrLater(int32 major, int32 minor, int32 bug_fix) {
   static const int32* current_version = OSVersionAsArray();
   int32 version[] = { major, minor, bug_fix };
   for (size_t i = 0; i < arraysize(version); i++) {
     if (current_version[i] != version[i])
       return current_version[i] > version[i];
   }
   return true;
 }
 
+bool IsInForcedRTL() {
+  NSUserDefaults* defaults = [NSUserDefaults standardUserDefaults];
+  return [defaults boolForKey:@"AppleTextDirection"];
+}
+
 }  // namespace ios
 }  // namespace base