Fix typos in comments "reciever" -> "receiver".

ios/chrome/browser/payments/payment_request_manager.h

 // 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_PAYMENTS_PAYMENT_REQUEST_MANAGER_H_
 #define IOS_CHROME_BROWSER_PAYMENTS_PAYMENT_REQUEST_MANAGER_H_
 
 #import <UIKit/UIKit.h>
 
 namespace ios {
@@ skipping 19 matching lines @@
 
 // Designated initializer.
 - (instancetype)initWithBaseViewController:(UIViewController*)viewController
                               browserState:
                                   (ios::ChromeBrowserState*)browserState
     NS_DESIGNATED_INITIALIZER;
 
 - (instancetype)init NS_UNAVAILABLE;
 
 // Sets the WebState to be observed for invocations of the Payment Request API.
-// |webState|'s lifetime should be greater than the reciever's. |webState| can
+// |webState|'s lifetime should be greater than the receiver's. |webState| can
 // be nil.
 - (void)setWebState:(web::WebState*)webState;
 
 // Enables or disables the Payment Request API for the current webState. If
 // |enabled| is YES, the API may still not be enabled if the flag is not set;
 // the -enabled property will indicate the current status. This method functions
 // asynchronously.
 - (void)enablePaymentRequest:(BOOL)enabled;
 
 // Cancels the pending request and dismiss the UI.
 - (void)cancelRequest;
 
 // Destroys the receiver. Any following call is not supported.
 - (void)close;
 
 @end
 
 #endif  // IOS_CHROME_BROWSER_PAYMENTS_PAYMENT_REQUEST_MANAGER_H_