Roll src/third_party/cros_system_api/ dfd19c1b9..f6d74c196 (5 commits)

https://chromium.googlesource.com/chromiumos/platform2/system_api.git/+log/dfd19c1b9bbc..f6d74c196c6c

$ git log dfd19c1b9..f6d74c196 --date=short --no-merges --format='%ad %ae %s'
2020-11-12 jiejiang patchpanel: Generate neighbor failed/recovered events
2020-11-17 pmarko system_api: Clarify KeyInfo.domain semantics for EMK/EUK
2020-11-19 danielng system_api: adding exec field to apps.proto
2020-11-19 danielng system_api: clarity changes to apps.proto
2020-10-28 niwa cryptohome: Implement GetQuotaCurrentSpaceForProjectId()

Created with:
  roll-dep src/third_party/cros_system_api

Change-Id: I31c4ace4d70add29e2659f7d87443999053dcfeb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2557820
Commit-Queue: Daniel Ng <danielng@google.com>
Auto-Submit: Daniel Ng <danielng@google.com>
Reviewed-by: Nic Hollingum <hollingum@google.com>
Cr-Commit-Position: refs/heads/master@{#830893}

DEPS

@@ -914,7 +914,7 @@ deps = {
 
   # For Linux and Chromium OS.
   'src/third_party/cros_system_api': {
-      'url': Var('chromium_git') + '/chromiumos/platform2/system_api.git' + '@' + 'dfd19c1b9bbc15cf406bb524640182649be2733d',
+      'url': Var('chromium_git') + '/chromiumos/platform2/system_api.git' + '@' + 'f6d74c196c6cf15e6b40ad80895dddfbebc5b374',
       'condition': 'checkout_linux',
   },