Upstream Chrome on iOS source code [4/11].

ios/chrome/browser/ui/fancy_ui/bidi_container_view.h

+// Copyright (c) 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 IOS_CHROME_BROWSER_UI_FANCY_UI_BIDI_CONTAINER_VIEW_H_
+#define IOS_CHROME_BROWSER_UI_FANCY_UI_BIDI_CONTAINER_VIEW_H_
+
+#import <UIKit/UIKit.h>
+
+#include "base/mac/scoped_nsobject.h"
+
+namespace ios {
+namespace rtl {
+enum AdjustSubviewsForRTLType {
+  ADJUST_FRAME_AND_AUTOROTATION_MASK_FOR_ALL_SUBVIEWS,
+  ADJUST_FRAME_FOR_UPDATED_SUBVIEWS
+};
+}  // namespace rtl
+}  // namespace ios
+
+// A UIView that lays outs its subviews based on the direction of the current
+// language. If the current language is RTL then during the first call to
+// |layoutSubviews|, this view will flip horizontally all its subviews around
+// its center axis and adjust the autoresizing masks.
+@interface BidiContainerView : UIView {
+ @private
+  ios::rtl::AdjustSubviewsForRTLType adjustSubviewsType_;
+  base::scoped_nsobject<NSMutableSet> subviewsToBeAdjustedForRTL_;
+}
+
+// Adds |subview| to the set of subviews that need to be adjusted to RTL. If the
+// current language is RTL, then the next call |layoutSubviews| will flip
+// |subview| horizontally around its center axis.
+- (void)setSubviewNeedsAdjustmentForRTL:(UIView*)subview;
+
+@end
+
+#endif  // IOS_CHROME_BROWSER_UI_FANCY_UI_BIDI_CONTAINER_VIEW_H_