[iOS] Upstream files in //ios/chrome/browser/autofill

ios/chrome/browser/autofill/form_input_accessory_view_delegate.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_AUTOFILL_FORM_INPUT_ACCESSORY_VIEW_DELEGATE_H_
+#define IOS_CHROME_BROWSER_AUTOFILL_FORM_INPUT_ACCESSORY_VIEW_DELEGATE_H_
+
+#import <Foundation/Foundation.h>
+
+// Handles user interaction with a FormInputAccessoryView.
+@protocol FormInputAccessoryViewDelegate<NSObject>
+
+// Called when the close button is clicked.
+- (void)closeKeyboard;
+
+// Called when the previous button is clicked.
+- (void)selectPreviousElement;
+
+// Called when the next button is clicked.
+- (void)selectNextElement;
+
+// Called when updating the keyboard view. Checks if the page contains a next
+// and a previous element.
+// |completionHandler| is called with 2 BOOLs, the first indicating if a
+// previous element was found, and the second indicating if a next element was
+// found. |completionHandler| cannot be nil.
+- (void)fetchPreviousAndNextElementsPresenceWithCompletionHandler:
+        (void (^)(BOOL, BOOL))completionHandler;
+
+@end
+
+#endif  // IOS_CHROME_BROWSER_AUTOFILL_FORM_INPUT_ACCESSORY_VIEW_DELEGATE_H_