Creates coordinator for ActionSheet and TextInput

ios/chrome/browser/ui/alert_coordinator/input_alert_coordinator.mm

Index: ios/chrome/browser/ui/alert_coordinator/input_alert_coordinator.mm
diff --git a/ios/chrome/browser/ui/alert_coordinator/input_alert_coordinator.mm b/ios/chrome/browser/ui/alert_coordinator/input_alert_coordinator.mm
new file mode 100644
index 0000000000000000000000000000000000000000..ccd10020407c2ef5147a1c4622a4293ed9707291
--- /dev/null
+++ b/ios/chrome/browser/ui/alert_coordinator/input_alert_coordinator.mm
@@ -0,0 +1,19 @@
+// 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.
+
+#import "ios/chrome/browser/ui/alert_coordinator/input_alert_coordinator.h"
+
+@implementation InputAlertCoordinator
+
+- (NSArray<UITextField*>*)textFields {
+  return [self.alertController textFields];
+}
+
+- (void)addTextFieldWithConfigurationHandler:
+    (void (^)(UITextField* textField))configurationHandler {
+  [self.alertController
+      addTextFieldWithConfigurationHandler:configurationHandler];
+}
+
+@end