Fix location of NSS library on armhf linux.

BUG=327453
TEST=arm linux trybot

Review URL: https://codereview.chromium.org/111713006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@240018 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 240018
Add a header when fetching pages under the DMServer URL.

PolicyHeaderService now generates a json-style header to send up with web requests sent to DMServer containing information about the current policy state. This allows DMServer to return policy information via SAML assertions to authorized service providers.

BUG=326799
TBR=jochen

Review URL: https://codereview.chromium.org/99433004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@240019 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 240019