Upstream Chrome on iOS source code [8/11].

ios/chrome/browser/ui/settings/utils/fake_observable_boolean.h

Index: ios/chrome/browser/ui/settings/utils/fake_observable_boolean.h
diff --git a/ios/chrome/browser/ui/settings/utils/fake_observable_boolean.h b/ios/chrome/browser/ui/settings/utils/fake_observable_boolean.h
new file mode 100644
index 0000000000000000000000000000000000000000..a7a75982151f5e2dc1e2c6a60bf19849fb5a49f9
--- /dev/null
+++ b/ios/chrome/browser/ui/settings/utils/fake_observable_boolean.h
@@ -0,0 +1,24 @@
+// Copyright 2016 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_SETTINGS_UTILS_FAKE_OBSERVABLE_BOOLEAN_H_
+#define IOS_CHROME_BROWSER_UI_SETTINGS_UTILS_FAKE_OBSERVABLE_BOOLEAN_H_
+
+#import <Foundation/Foundation.h>
+
+#import "ios/chrome/browser/ui/settings/utils/observable_boolean.h"
+
+// ObservableBoolean to be used in tests.
+@interface FakeObservableBoolean : NSObject<ObservableBoolean>
+@end
+
+// BooleanObserver to be used in tests. It reports the number of changes made.
+@interface TestBooleanObserver : NSObject<BooleanObserver>
+
+// Number of changes made since this observer started observing.
+@property(nonatomic, assign) int updateCount;
+
+@end
+
+#endif  // IOS_CHROME_BROWSER_UI_SETTINGS_UTILS_FAKE_OBSERVABLE_BOOLEAN_H_