Roll src/third_party/cros_system_api/ 62d5021bb..1f64aefc2 (1 commit)

https://chromium.googlesource.com/chromiumos/platform/system_api.git/+log/62d5021bb6d4..1f64aefc280e

$ git log 62d5021bb..1f64aefc2 --date=short --no-merges --format='%ad %ae %s'
2018-04-20 timloh Add startup_notify field to apps.proto

Created with:
  roll-dep src/third_party/cros_system_api

Bug: 821662
Change-Id: I5126d2b48bb46832aea047cb857cf8bab6cee518
Reviewed-on: https://chromium-review.googlesource.com/1029330Reviewed-by: Nicholas Verne <nverne@chromium.org>
Commit-Queue: Timothy Loh <timloh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#553887}

DEPS

@@ -504,7 +504,7 @@ deps = {
 
   # For Linux and Chromium OS.
   'src/third_party/cros_system_api': {
-      'url': Var('chromium_git') + '/chromiumos/platform/system_api.git' + '@' + '62d5021bb6d4b23c3c92960dd021621b71e0924f',
+      'url': Var('chromium_git') + '/chromiumos/platform/system_api.git' + '@' + '1f64aefc280ef03010d5dd1cb22954ed3bfc0056',
       'condition': 'checkout_linux',
   },