Remove SignInSource from ShowSigninCommand.

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

 // Copyright 2014 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_COMMANDS_SHOW_SIGNIN_COMMAND_H_
 #define IOS_CHROME_BROWSER_UI_COMMANDS_SHOW_SIGNIN_COMMAND_H_
 
 #import <Foundation/Foundation.h>
 
 #include "components/signin/core/browser/signin_metrics.h"
-#include "ios/chrome/browser/signin/constants.h"
 #include "ios/chrome/browser/ui/commands/generic_chrome_command.h"
 
 typedef void (^ShowSigninCommandCompletionCallback)(BOOL succeeded);
 
 enum AuthenticationOperation {
   // Operation to cancel the current authentication operation and dismiss any
   // UI presented by this operation.
   AUTHENTICATION_OPERATION_DISMISS,
 
   // Operation to start a re-authenticate operation. The user is presented with
   // the SSOAuth re-authenticate web page.
   AUTHENTICATION_OPERATION_REAUTHENTICATE,
 
   // Operation to start a sign-in operation. The user is presented with the
   // SSOAuth sign in page (SSOAuth account picker or SSOAuth sign-in web page).
   AUTHENTICATION_OPERATION_SIGNIN,
 };
 
 // A command to perform a sign in operation.
 @interface ShowSigninCommand : GenericChromeCommand
 
 // Mark inherited initializer as unavailable to prevent calling it by mistake.
 - (instancetype)initWithTag:(NSInteger)tag NS_UNAVAILABLE;
 
 // Initializes a command to perform the specified operation with a
 // SigninInteractionController and invoke a possibly-nil callback when finished.
 - (instancetype)initWithOperation:(AuthenticationOperation)operation
-                     signInSource:(SignInSource)signInSource
-                         callback:(ShowSigninCommandCompletionCallback)callback
-    NS_DESIGNATED_INITIALIZER;
-
-// Initializes a ShowSigninCommand with a nil callback.
-- (instancetype)initWithOperation:(AuthenticationOperation)operation
-                     signInSource:(SignInSource)signInSource;
-
-// Initializes a command to perform the specified operation with a
-// SigninInteractionController and invoke a possibly-nil callback when finished.
-- (instancetype)initWithOperation:(AuthenticationOperation)operation
                 signInAccessPoint:(signin_metrics::AccessPoint)signInAccessPoint
-                         callback:(ShowSigninCommandCompletionCallback)callback;
+                         callback:(ShowSigninCommandCompletionCallback)callback
+    NS_DESIGNATED_INITIALIZER;
 
 // Initializes a ShowSigninCommand with a nil callback.
 - (instancetype)initWithOperation:(AuthenticationOperation)operation
                 signInAccessPoint:
                     (signin_metrics::AccessPoint)signInAccessPoint;
 
 // The callback to be invoked after the operation is complete.
 @property(nonatomic, readonly) ShowSigninCommandCompletionCallback callback;
 
 // The operation to perform during the sign-in flow.
 @property(nonatomic, readonly) AuthenticationOperation operation;
 
-// The source of this authentication operation.
-@property(nonatomic, readonly) SignInSource signInSource;
-
 // The access point of this authentication operation.
 @property(nonatomic, readonly) signin_metrics::AccessPoint signInAccessPoint;
 
 @end
 
 #endif  // IOS_CHROME_BROWSER_UI_COMMANDS_SHOW_SIGNIN_COMMAND_H_