Upstream Chrome on iOS source code [3/11].

ios/chrome/browser/ui/activity_services/appex_constants.mm

+// Copyright 2015 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/activity_services/appex_constants.h"
+
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
+namespace activity_services {
+
+// Values for these constants to communicate with Password Management iOS App
+// Extensions came from https://github.com/AgileBits/onepassword-app-extension
+NSString* const kPasswordAppExVersionNumberKey = @"version_number";
+NSString* const kPasswordAppExURLStringKey = @"url_string";
+NSString* const kPasswordAppExUsernameKey = @"username";
+NSString* const kPasswordAppExPasswordKey = @"password";
+
+NSNumber* const kPasswordAppExVersionNumber = @110;
+
+NSString* const kUTTypeAppExtensionFindLoginAction =
+    @"org.appextension.chrome-password-action";
+
+// Known App Extensions.
+NSString* const kAppExtensionOnePassword =
+    @"com.agilebits.onepassword-ios.extension";
+NSString* const kAppExtensionLastPass = @"com.lastpass.ilastpass.LastPassExt";
+NSString* const kAppExtensionDashlanePrefix =
+    @"com.dashlane.dashlanephonefinal.";
+
+}  // namespace activity_services