NSS Cros multiprofile: trust roots added by a profile shouldn't apply to other profiles.

net/data/ssl/certificates/README

 This directory contains various certificates for use with SSL-related
 unit tests.
 
 - google.binary.p7b
 - google.chain.pem
 - google.pem_cert.p7b
 - google.pem_pkcs7.p7b
 - google.pkcs7.p7b
 - google.single.der
 - google.single.pem
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 - redundant-validated-chain-root.pem
 
      Two chains, A -> B -> C -> D and A -> B -> C2 (C and C2 share the same
      public key) to test that SSLInfo gets the reconstructed, re-ordered
      chain instead of the chain as served. See
      SSLClientSocketTest.VerifyReturnChainProperlyOrdered in
      net/socket/ssl_client_socket_unittest.cc. These chains are valid until
      26 Feb 2022 and are generated by
      net/data/ssl/scripts/generate-redundant-test-chains.sh.
 
+- multi-root-chain1.pem
+- multi-root-chain2.pem
+     Two chains, A -> B -> C -> D and A -> B -> C2 -> E (C and C2 share the
+     same public key) to test that certificate validation caching does not
+     interfere with the chain_verify_callback used by CertVerifyProcChromeOS.
+     See CertVerifyProcChromeOSTest.
+
 - comodo.chain.pem : A certificate chain for www.comodo.com which should be
      recognised as EV. Expires Jun 21 2013.
 
 - ocsp-test-root.pem : A root certificate for the code in
       net/tools/testserver/minica.py
 
 - spdy_pooling.pem : Used to test the handling of spdy IP connection pooling
      Generated by using the command
      "openssl req -x509 -days 3650 -sha1 -extensions req_spdy_pooling \
           -config ../scripts/ee.cnf -newkey rsa:1024 -text \
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 - ct-test-embedded-cert.pem
 - ct-test-embedded-with-intermediate-chain.pem
 - ct-test-embedded-with-intermediate-preca-chain.pem
 - ct-test-embedded-with-preca-chain.pem
      Test certificate chains for Certificate Transparency: Each of these
      files contains a leaf certificate as the first certificate, which has
      embedded SCTs, followed by the issuer certificates chain.
      All files are from the src/test/testdada directory in
      https://code.google.com/p/certificate-transparency/