DtlsIdentityStoreInterface::RequestIdentity: const& parameters

Changing from:

virtual void RequestIdentity(
    rtc::KeyParams key_params,
    rtc::Optional<uint64_t> expires,
    const rtc::scoped_refptr<DtlsIdentityRequestObserver>& observer);

to:

virtual void RequestIdentity(
    const rtc::KeyParams& key_params,
    const rtc::Optional<uint64_t>& expires_ms,
    const rtc::scoped_refptr<DtlsIdentityRequestObserver>& observer);

Making FakeDtlsIdentityStore DCHECK that |expires_ms| is not set, since it does not support that parameterization.

In a follow-up chromium CL the new signature will be used.

BUG=webrtc:5092, chromium:544902

Review URL: https://codereview.webrtc.org/1766673002

Cr-Original-Commit-Position: refs/heads/master@{#11892}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 5291393510c17748701706471272c1ba0151dec2
4 files changed