DtlsIdentityStoreInterface::RequestIdentity with rtc::KeyParams

New DtlsIdentityStoreInterface::RequestIdentity added that takes rtc::KeyParams. The old RequestIdentity still exists that take rtc::KeyType.

Default implementation added that invokes the other RequestIdentity method, adding default parameters or dropping the parameters.

This CL is in preparation for removing the RequestIdentity that takes rtc::KeyType, necessary as to not break Chromium.

BUG=webrtc:4927, 528250
Committed: https://crrev.com/3b7c7935749a955996575e11e718603e4c8cd3a6
Cr-Commit-Position: refs/heads/master@{#10351}

[hbos, 2015-10-20 16:22:29]

Description was changed from

==========
RequestIdentity swag

BUG=
==========

to

==========
New DtlsIdentityStoreInterface::RequestIdentity added that takes rtc::KeyParams.
The old RequestIdentity still exists that take rtc::KeyType.

Default implementation added that invokes the other RequestIdentity method,
adding default parameters or dropping the parameters.

This CL is in preparation for removing the RequestIdentity that takes
rtc::KeyType, necessary as to not break Chromium.

BUG=
==========

[hbos, 2015-10-20 16:22:30]

hbos@webrtc.org changed reviewers:
+ tommi@webrtc.org, torbjorng@webrtc.org

[hbos, 2015-10-20 16:22:51]

Patchset #1 (id:1) has been deleted

[hbos, 2015-10-21 07:24:03]

PTAL torbjorng, tommi. Preferrably quickly, it's a tiny CL that doesn't change
functionality but the sooner I land it the sooner I can roll.

[hbos, 2015-10-21 07:25:12]

Description was changed from

==========
New DtlsIdentityStoreInterface::RequestIdentity added that takes rtc::KeyParams.
The old RequestIdentity still exists that take rtc::KeyType.

Default implementation added that invokes the other RequestIdentity method,
adding default parameters or dropping the parameters.

This CL is in preparation for removing the RequestIdentity that takes
rtc::KeyType, necessary as to not break Chromium.

BUG=
==========

to

==========
New DtlsIdentityStoreInterface::RequestIdentity added that takes rtc::KeyParams.
The old RequestIdentity still exists that take rtc::KeyType.

Default implementation added that invokes the other RequestIdentity method,
adding default parameters or dropping the parameters.

This CL is in preparation for removing the RequestIdentity that takes
rtc::KeyType, necessary as to not break Chromium.

BUG=4927, chromium:528250
==========

[hbos, 2015-10-21 07:25:42]

Description was changed from

==========
New DtlsIdentityStoreInterface::RequestIdentity added that takes rtc::KeyParams.
The old RequestIdentity still exists that take rtc::KeyType.

Default implementation added that invokes the other RequestIdentity method,
adding default parameters or dropping the parameters.

This CL is in preparation for removing the RequestIdentity that takes
rtc::KeyType, necessary as to not break Chromium.

BUG=4927, chromium:528250
==========

to

==========
New DtlsIdentityStoreInterface::RequestIdentity added that takes rtc::KeyParams.
The old RequestIdentity still exists that take rtc::KeyType.

Default implementation added that invokes the other RequestIdentity method,
adding default parameters or dropping the parameters.

This CL is in preparation for removing the RequestIdentity that takes
rtc::KeyType, necessary as to not break Chromium.

BUG=webrtc:4927, 528250
==========

[tommi, 2015-10-21 08:16:35]

lgtm

[hbos, 2015-10-21 08:43:15]

The CQ bit was checked by hbos@webrtc.org

[commit-bot: I haz the power, 2015-10-21 08:43:28]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1414243003/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1414243003/20001

[commit-bot: I haz the power, 2015-10-21 08:44:26]

Committed patchset #1 (id:20001)

[commit-bot: I haz the power, 2015-10-21 08:44:37]

Patchset 1 (id:??) landed as
https://crrev.com/3b7c7935749a955996575e11e718603e4c8cd3a6
Cr-Commit-Position: refs/heads/master@{#10351}