Update the comments on PasswordSpecificsData. The Android format was described wrong.

components/sync/protocol/password_specifics.proto

 // Copyright (c) 2012 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.
 //
 // Sync protocol datatype extension for password data.
 
 // Update proto_value_conversions{.h,.cc,_unittest.cc} if you change
 // any fields in this file.
 
 syntax = "proto2";
@@ skipping 24 matching lines @@
   // android credential or a password saved through Credential Manager API
   // (https://w3c.github.io/webappsec/specs/credentialmanagement/).
   // SCHEME_BASIC(1), basic access http authentication.
   // SCHEME_DIGEST(2), digest access authentication.
   // SCHEME_OTHER(3), another access authentication.
   optional int32 scheme = 1;
 
   // For parsed web forms and normal passwords saved through Credential Manager
   // API: url-scheme://url-host[:url-port]/
   // For Android apps (local + federated):
-  //     "android://<hash of cert>@<package name>"
+  //     "android://<hash of cert>@<package name>/"
   // where the hash is base64 encoded SHA512 of the app's public certificate.
   // For federated credentials:
   //     "federation://" + origin_host + "/" + federation_host
   // For proxy auth: proxy-host/auth-realm
   // For HTTP auth: url-scheme://url-host[:url-port]/auth-realm
   optional string signon_realm = 2;
 
   // For parsed web forms and Credential Manager API:
   //     url-scheme://url-host[:url-port]/path
-  // For Android: "android://<hash of cert>@<package name>"
+  // For Android: "android://<hash of cert>@<package name>/"
   // For proxy/HTTP auth: url-scheme://url-host[:url-port]/path
   optional string origin = 3;
 
   // Only for web-parsed forms - the action target of the form:
   //     url-scheme://url-host[:url-port]/path
   optional string action = 4;
 
   // Only for web-parsed forms - the name of the element containing username.
   optional string username_element = 5;
 
@@ skipping 54 matching lines @@
   // message.
   optional EncryptedData encrypted = 1;
   // An unsynced field for use internally on the client. This field should
   // never be set in any network-based communications.
   optional PasswordSpecificsData client_only_encrypted_data = 2;
   // Password related metadata, which is sent to the server side. The field
   // should never be set for full encryption users. If encryption is enabled,
   // this field must be cleared.
   optional PasswordSpecificsMetadata unencrypted_metadata = 3;
 }