Roll src/third_party/cros_system_api/ b03af0353..48093e267 (2 commits)

https://chromium.googlesource.com/chromiumos/platform/system_api.git/+log/b03af0353854..48093e2673c6

$ git log b03af0353..48093e267 --date=short --no-merges --format='%ad %ae %s'
2018-09-14 timzheng Add a display density parameter.
2018-09-07 iby Add package info for Crostini apps

Created with:
  roll-dep src/third_party/cros_system_api

Bug: chromium:839242
Change-Id: I518308ae7ca60ae0cf7110aef7cc2692e8e148fb
Reviewed-on: https://chromium-review.googlesource.com/1232208
Commit-Queue: Tim Zheng <timzheng@chromium.org>
Commit-Queue: May Lippert <maybelle@chromium.org>
Reviewed-by: May Lippert <maybelle@chromium.org>
Cr-Commit-Position: refs/heads/master@{#592279}

DEPS

@@ -599,7 +599,7 @@ deps = {
 
   # For Linux and Chromium OS.
   'src/third_party/cros_system_api': {
-      'url': Var('chromium_git') + '/chromiumos/platform/system_api.git' + '@' + 'b03af0353854028bfae0ce978e8666e815f621b9',
+      'url': Var('chromium_git') + '/chromiumos/platform/system_api.git' + '@' + '48093e2673c64d27062da7df353d7f7cf2aa398f',
       'condition': 'checkout_linux',
   },