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

ios/chrome/browser/passwords/password_generation_utils.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_PASSWORDS_PASSWORD_GENERATION_UTILS_H_
+#define IOS_CHROME_BROWSER_PASSWORDS_PASSWORD_GENERATION_UTILS_H_
+
+#import <Foundation/Foundation.h>
+#import <CoreGraphics/CoreGraphics.h>
+
+namespace passwords {
+
+// Returns the frame determined by moving |inner_frame| inside |outer_frame|
+// for the password generation input accessory views.
+CGRect GetGenerationAccessoryFrame(CGRect outer_frame, CGRect inner_frame);
+
+// Block types for |RunSearchPipeline|.
+typedef void (^PipelineBlock)(void (^completion)(BOOL));
+typedef void (^PipelineCompletionBlock)(NSUInteger index);
+
+// Executes each PipelineBlock in |blocks| in order until one invokes its
+// completion with YES, in which case |on_complete| will be invoked with the
+// |index| of the succeeding block, or until they all invoke their completions
+// with NO, in which case |on_complete| will be invoked with NSNotFound.
+void RunSearchPipeline(NSArray* blocks, PipelineCompletionBlock on_complete);
+
+}  // namespace passwords
+
+#endif  // IOS_CHROME_BROWSER_PASSWORDS_PASSWORD_GENERATION_UTILS_H_