Disable infobars by default through extra browser args when reporting speed index.

BUG=336007
TEST=

./tools/perf/run_measurement page_cycler --browser=android-chromium-testshell tools/perf/page_sets/key_search_mobile.json --report-speed-index

Should have no more infobars by default.

Review URL: https://codereview.chromium.org/147263003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@250564 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 250564
Add suppression for variant of NSS leak called from NSSDecryptor::Init()

BUG=321976
TBR=rtenneti@chromium.org

Review URL: https://codereview.chromium.org/156603006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@250565 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 250565