Add a check that we don't send a secure referrer to an insecure URL

Unless one of the non-default referrer policies is set, this should
never happen.

BUG=none
R=mef@chromium.org

Review URL: https://codereview.chromium.org/115803003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241876 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 241876
Pepper: Finish support for dev channel APIs.

This change completes the wiring, adding a file to list dev channel interfaces,
analogous to what exists for different permissions today. We only need to
introduce interfaces_ppb_public_dev_channel.h since we don't anticipate
dev channel APIs with permissions other than NONE.

BUG=325403
R=dmichael@chromium.org

Review URL: https://codereview.chromium.org/112343005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241877 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 241877