[iOS] Upstream autofill component code

components/autofill/ios/browser/js_autofill_manager.h

+// Copyright 2013 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 COMPONENTS_AUTOFILL_IOS_BROWSER_JS_AUTOFILL_MANAGER_H_
+#define COMPONENTS_AUTOFILL_IOS_BROWSER_JS_AUTOFILL_MANAGER_H_
+
+#include "base/ios/block_types.h"
+#include "components/autofill/core/common/autofill_constants.h"
+#import "ios/web/public/web_state/js/crw_js_injection_manager.h"
+
+@class CRWJSInjectionReceiver;
+
+// Loads the JavaScript file, autofill_controller.js, which contains form
+// parsing and autofill functions.
+@interface JsAutofillManager : CRWJSInjectionManager
+
+// Extracts forms from a web page. Only forms with at least |requiredFields|
+// fields and the appropriate attribute requirements are extracted.
+// |completionHandler| is called with the JSON string of forms of a web page.
+// |completionHandler| cannot be nil.
+- (void)fetchFormsWithRequirements:(autofill::RequirementsMask)requirements
+        minimumRequiredFieldsCount:(NSUInteger)requiredFieldsCount
+                 completionHandler:(void (^)(NSString*))completionHandler;
+
+// Fills the data in JSON string |dataString| into the active form field, then
+// executes the |completionHandler|.
+- (void)fillActiveFormField:(NSString*)dataString
+          completionHandler:(ProceduralBlock)completionHandler;
+
+// Fills a number of fields in the same named form.
+// |completionHandler| is called after the forms are filled. |completionHandler|
+// cannot be nil.
+- (void)fillForm:(NSString*)dataString
+    completionHandler:(ProceduralBlock)completionHandler;
+
+// Dispatches the autocomplete event to the form element with the given
+// |formName|.
+- (void)dispatchAutocompleteEvent:(NSString*)formName;
+
+// Dispatches the autocomplete error event to the form element with the given
+// |formName|, supplying the given reason.
+- (void)dispatchAutocompleteErrorEvent:(NSString*)formName
+                            withReason:(NSString*)reason;
+
+// Marks up the form with autofill field prediction data (diagnostic tool).
+- (void)fillPredictionData:(NSString*)dataString;
+
+@end
+
+#endif  // COMPONENTS_AUTOFILL_IOS_BROWSER_JS_AUTOFILL_MANAGER_H_