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

ios/chrome/browser/ui/settings/time_range_selector_collection_view_controller.h

Index: ios/chrome/browser/ui/settings/time_range_selector_collection_view_controller.h
diff --git a/ios/chrome/browser/ui/settings/time_range_selector_collection_view_controller.h b/ios/chrome/browser/ui/settings/time_range_selector_collection_view_controller.h
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index 0000000000000000000000000000000000000000..73e8ce9eb2b1eea43ad60afd7ae7dc894e4fc07f
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+++ b/ios/chrome/browser/ui/settings/time_range_selector_collection_view_controller.h
@@ -0,0 +1,42 @@
+// 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_TIME_RANGE_SELECTOR_COLLECTION_VIEW_CONTROLLER_H_
+#define IOS_CHROME_BROWSER_UI_SETTINGS_TIME_RANGE_SELECTOR_COLLECTION_VIEW_CONTROLLER_H_
+
+#include "components/browsing_data/core/browsing_data_utils.h"
+#import "ios/chrome/browser/ui/settings/settings_root_collection_view_controller.h"
+
+class PrefService;
+@class TimeRangeSelectorCollectionViewController;
+
+@protocol TimeRangeSelectorCollectionViewControllerDelegate<NSObject>
+
+// Informs the delegate that |timePeriod| was selected.
+- (void)timeRangeSelectorViewController:
+            (TimeRangeSelectorCollectionViewController*)collectionViewController
+                    didSelectTimePeriod:(browsing_data::TimePeriod)timePeriod;
+
+@end
+
+// Table view for time range selection.
+@interface TimeRangeSelectorCollectionViewController
+    : SettingsRootCollectionViewController
+
+- (instancetype)
+initWithPrefs:(PrefService*)prefs
+     delegate:(id<TimeRangeSelectorCollectionViewControllerDelegate>)delegate
+    NS_DESIGNATED_INITIALIZER;
+
+- (instancetype)initWithStyle:(CollectionViewControllerStyle)style
+    NS_UNAVAILABLE;
+
+// Returns the text for the current setting, based on the values of the
+// preference. Kept in this class, so that all of the code to translate from
+// preference to UI is in one place.
++ (NSString*)timePeriodLabelForPrefs:(PrefService*)prefs;
+
+@end
+
+#endif  // IOS_CHROME_BROWSER_UI_SETTINGS_TIME_RANGE_SELECTOR_COLLECTION_VIEW_CONTROLLER_H_