[iOS] Upstream //ios/chrome/browser/ui/commands changes

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 1378c686e3f47955babd197f80908f9c72ffaf20..cd9100f7594785243f3bf5869d0816adf0b9e69e 100644
--- a/ios/chrome/browser/ui/commands/clear_browsing_data_command.h
+++ b/ios/chrome/browser/ui/commands/clear_browsing_data_command.h
@@ -7,18 +7,28 @@
 
 #import <Foundation/Foundation.h>
 
+#import "ios/chrome/browser/ui/commands/generic_chrome_command.h"
+
 namespace ios {
 class ChromeBrowserState;
 }
 
 // Command sent to clear the browsing data associated with a browser state.
-@interface ClearBrowsingDataCommand : NSObject
+@interface ClearBrowsingDataCommand : GenericChromeCommand
+
+// Mark inherited initializer as unavailable to prevent calling it by mistake.
+- (instancetype)initWithTag:(NSInteger)tag NS_UNAVAILABLE;
 
+// Initializes a command intented to clear browsing data for |browserState|
+// that correspong to removal mask |mask|.
 - (instancetype)initWithBrowserState:(ios::ChromeBrowserState*)browserState
-                                mask:(int)mask;
+                                mask:(int)mask NS_DESIGNATED_INITIALIZER;
+
+// When executed this command will remove browsing data for this BrowserState.
+@property(nonatomic, readonly) ios::ChromeBrowserState* browserState;
 
-@property(nonatomic, readonly, assign) ios::ChromeBrowserState* browserState;
-@property(nonatomic, readonly, assign) int mask;
+// Removal mask: see BrowsingDataRemover::RemoveDataMask.
+@property(nonatomic, readonly) int mask;
 
 @end