[PaymentApp] label field was changed to name field in PaymentAppOption.

content/browser/payments/payment_app.proto

 // 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.
 
 syntax = "proto2";
 
 option optimize_for = LITE_RUNTIME;
 
 package content;
 
 message PaymentAppManifestProto {
-  required string label = 1;
+  required string name = 1;

[please use gerrit instead, 2016/12/12 20:57:27]

Let's make all these fields optional.

These message describe how data is stored on disk. These formats should be
backward compatible. One rule of thumb to ensure backward compatibility is to
make all fields optional. It's OK to rename the field today, when no one has
used these messages out in the real world. However, if we want to rename a field
after this code has been shipped, we will need to do this instead:

message PaymentAppManifestProto {
  optional string label = 1; // deprecated in favor of |name|.
  optional string icon = 2;
  repeated PaymentAppOptionProto options = 3;
  optional name = 4;  // replaces |label|.
};

[Hwanseung Lee, 2016/12/14 06:11:16]

Done.

   optional string icon = 2;
   repeated PaymentAppOptionProto options = 3;
 }
 
 message PaymentAppOptionProto {
-  required string label = 1;
+  required string name = 1;
   optional string icon = 2;
   required string id = 3;
   repeated string enabled_methods = 4;
 }