Pass the SCH_CRED_REVOCATION_CHECK_CHAIN_EXCLUDE_ROOT flag to AcquireCredentialsHandle to cause the TLS certificate status request extension (commonly known as OCSP stapling) to be sent on Windows Vista or later.  I don't know if this is all we need to do to enable OCSP stapling though.
Pass the SCH_CRED_REVOCATION_CHECK_CHAIN_EXCLUDE_ROOT flag
to AcquireCredentialsHandle to cause the TLS certificate
status request extension (commonly known as OCSP stapling)
to be sent on Windows Vista or later.  I don't know if this
is all we need to do to enable OCSP stapling though.

R=hawk
BUG=26013
TEST=none
Review URL: http://codereview.chromium.org/329042

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@30407 0039d316-1c4b-4281-b951-d872f2087c98

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