The blacklist and browser security code now use install_static's
GetRegistryPath function to get the brand- and install mode-specific
path to a spot in the registry for various data stuffage.

BUG=577820,650982
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.win:win10_chromium_x64_rel_ng

Review-Url: https://codereview.chromium.org/2760853002
Cr-Commit-Position: refs/heads/master@{#461064}