OAuthHandler ExchangeCodeAsync signature change

[Tratcher]

As part of dotnet/aspnetcore#10928, a breaking change was introduced in 3.0.0-preview7 where the signature of OAuthHandler.ExchangeCodeAsync was changed from:

protected virtual System.Threading.Tasks.Task<Microsoft.AspNetCore.Authentication.OAuth.OAuthTokenResponse> ExchangeCodeAsync(string code, string redirectUri) { throw null; }

To:

protected virtual System.Threading.Tasks.Task<Microsoft.AspNetCore.Authentication.OAuth.OAuthTokenResponse> ExchangeCodeAsync(Microsoft.AspNetCore.Authentication.OAuth.OAuthCodeExchangeContext context) { throw null; }

This change was made in order to flow additional parameters.

OAuth handlers that override this API will need to be updated.

See dotnet/aspnetcore#10991 for discussion.

[This announcement has been migrated to: dotnet/docs#14942]