Creates a new package called clientcredentials and
adds transport and token information to the internal
package. Also modifies the oauth2 package to make
use of the newly added files in the internal package.
The clientcredentials package allows for token requests
using a "client credentials" grant type.
Fixes https://github.com/golang/oauth2/issues/7
Change-Id: Iec649d1029870c27a2d1023baa9d52db42ff45e8
Reviewed-on: https://go-review.googlesource.com/2983
Reviewed-by: Burcu Dogan <jbd@google.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
- Reduce the duplicate code by merging the flows and
determining the flow type by looking at the provided options.
- Options as a function type allows us to validate an individual
an option in its scope and makes it easier to compose the
built-in options with the third-party ones.
Aaron Torres
Burcu Dogan
Johan Euphrosine