Roll src/third_party/cros_system_api/ e5fc0c7cc..42f3f3cea (5 commits)

https://chromium.googlesource.com/chromiumos/platform2/system_api.git/+log/e5fc0c7ccb3c..42f3f3cea406

$ git log e5fc0c7cc..42f3f3cea --date=short --no-merges --format='%ad %ae %s'
2020-12-21 yichengli u2fd: Add dbus method to test legacy u2f credentials
2020-11-20 stevenjb shill: Eliminate shill::kCarrier Device DBus property
2020-12-16 dlunev cryptohome: remove support for hidden mounts
2020-12-10 hardikgoyal cryptohome: Add AuthenticateAuthSession API
2020-12-25 cherieccy system_api: Remove unused kOpenFileMethod

Created with:
  roll-dep src/third_party/cros_system_api

Change-Id: I44ea0f9512bebc1a89bd7947728277c7f61d8657
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2625394
Auto-Submit: Martin Kreichgauer <martinkr@google.com>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Cr-Commit-Position: refs/heads/master@{#842779}

DEPS

@@ -888,7 +888,7 @@ deps = {
 
   # For Linux and Chromium OS.
   'src/third_party/cros_system_api': {
-      'url': Var('chromium_git') + '/chromiumos/platform2/system_api.git' + '@' + 'e5fc0c7ccb3c64ec9679dd00e95b504121745912',
+      'url': Var('chromium_git') + '/chromiumos/platform2/system_api.git' + '@' + '42f3f3cea40612784b38532b9e5d1a54a3d2174c',
       'condition': 'checkout_linux',
   },