Disable TLS channel ID by default. (for merging to branch)

BUG=129174
TEST=browse to https://www.google.com, check chrome://histograms for DomainBoundCerts.Support. Then try with --enable-tls-channel-id flag.

Review URL: https://codereview.chromium.org/10979040

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@158894 0039d316-1c4b-4281-b951-d872f2087c98
4 files changed