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This usage was mapped to XF86XK_Tools and remapped to VKEY_F13 on
chrome, which is used for LOCK (logout) causing confusion for some
users. This usage is supported on Windows and Android to launch the
default media player, therefore it is now mapped to
VKEY_MEDIA_LAUNCH_MEDIA_SELECT.

R=garykac@chromium.org, wez@chromium.org, adlr@chromium.org

BUG=398345

Review URL: https://codereview.chromium.org/442333002

Cr-Commit-Position: refs/heads/master@{#295584}