Upstream Chrome on iOS source code [10/11].

ios/chrome/browser/ui/util/relaxed_bounds_constraints_hittest.h

+// Copyright 2015 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_UTIL_RELAXED_BOUNDS_CONSTRAINTS_HITTEST_H_
+#define IOS_CHROME_BROWSER_UI_UTIL_RELAXED_BOUNDS_CONSTRAINTS_HITTEST_H_
+
+#import <Foundation/Foundation.h>
+
+// This protocol is meant to be implemented by subclasses of UIView. It exposes
+// a property |hitTestBoundsContraintRelaxed| that when set to YES, inform that
+// bounds constraints on the hitTest: method shouldn't be taken into account.
+// The implementer of that protocol must override the hitTest: method and check
+// for that property.
+@protocol RelaxedBoundsConstraintsHitTestSupport<NSObject>
+
+@optional
+@property(nonatomic, assign) BOOL hitTestBoundsContraintRelaxed;
+
+@end
+
+#endif  // IOS_CHROME_BROWSER_UI_UTIL_RELAXED_BOUNDS_CONSTRAINTS_HITTEST_H_