Add support for time based deletion of browsing data on iOS

ios/chrome/browser/ui/commands/clear_browsing_data_command.h

Index: ios/chrome/browser/ui/commands/clear_browsing_data_command.h
diff --git a/ios/chrome/browser/ui/commands/clear_browsing_data_command.h b/ios/chrome/browser/ui/commands/clear_browsing_data_command.h
index cd9100f7594785243f3bf5869d0816adf0b9e69e..d07c7e952c397d87ba15cb7de4e773d76db44414 100644
--- a/ios/chrome/browser/ui/commands/clear_browsing_data_command.h
+++ b/ios/chrome/browser/ui/commands/clear_browsing_data_command.h
@@ -7,6 +7,7 @@
 
 #import <Foundation/Foundation.h>
 
+#import "components/browsing_data/core/browsing_data_utils.h"
 #import "ios/chrome/browser/ui/commands/generic_chrome_command.h"
 
 namespace ios {
@@ -20,7 +21,14 @@ class ChromeBrowserState;
 - (instancetype)initWithTag:(NSInteger)tag NS_UNAVAILABLE;
 
 // Initializes a command intented to clear browsing data for |browserState|
-// that correspong to removal mask |mask|.
+// that corresponds to removal mask |mask| for the time period |timePeriod|.
+- (instancetype)initWithBrowserState:(ios::ChromeBrowserState*)browserState
+                                mask:(int)mask
+                          timePeriod:(browsing_data::TimePeriod)timePeriod
+    NS_DESIGNATED_INITIALIZER;
+
+// Initializes a command intented to clear browsing data for |browserState|
+// that corresponds to removal mask |mask|.
 - (instancetype)initWithBrowserState:(ios::ChromeBrowserState*)browserState
                                 mask:(int)mask NS_DESIGNATED_INITIALIZER;
 
@@ -30,6 +38,9 @@ class ChromeBrowserState;
 // Removal mask: see BrowsingDataRemover::RemoveDataMask.
 @property(nonatomic, readonly) int mask;
 
+// Time period for which the browsing data will be removed.
+@property(nonatomic, readonly) browsing_data::TimePeriod timePeriod;
+
 @end
 
 #endif  // IOS_CHROME_BROWSER_UI_COMMANDS_CLEAR_BROWSING_DATA_COMMAND_H_