Roll cros_system_api to 3fabe200 for new cras property constants.

DEPS

 # When adding a new dependency, please update the top-level .gitignore file
 # to list the dependency's destination directory.
 
 vars = {
   # Use this googlecode_url variable only if there is an internal mirror for it.
   # If you do not know, use the full path while defining your new deps entry.
   "googlecode_url": "http://%s.googlecode.com/svn",
   "sourceforge_url": "http://%(repo)s.svn.sourceforge.net/svnroot/%(repo)s",
   "webkit_trunk": "http://src.chromium.org/blink/trunk",
   "nacl_trunk": "http://src.chromium.org/native_client/trunk",
@@ skipping 534 matching lines @@
       "@132604f107368f617a3073ba2d515b78641ceeed",
 
     # Used on Linux only. CrOS already has a copy.
     "src/third_party/cros_dbus_cplusplus/source":
       Var("chromiumos_git") + "/third_party/dbus-cplusplus.git" +
       "@5e8f6d9db5c2abfb91d91f751184f25bb5cd0900",
 
     # For Linux and Chromium OS.
     "src/third_party/cros_system_api":
       Var("chromiumos_git") + "/platform/system_api.git" +
-      "@5d39f60ce99c9133ff5932446ba46a51bf0c2b70",
+      "@3fabe2002eae665cd108685376d6a07ccbebe533",
 
     # Note that this is different from Android's freetype repo.
     "src/third_party/freetype2/src":
       Var("chromium_git") + "/chromium/src/third_party/freetype2.git" +
       "@d699c2994ecc178c4ed05ac2086061b2034c2178",
 
     # Build tools for targeting ChromeOS.
     "src/third_party/chromite":
       Var("chromiumos_git") + "/chromite.git" +
       "@1d8a25be640e27cbac454995239cd71f34b5f613",
@@ skipping 128 matching lines @@
     # A change to a .gyp, .gypi, or to GYP itself should run the generator.
     "pattern": ".",
     "action": ["python", "src/build/gyp_chromium"],
   },
   {
     # Check for landmines (reasons to clobber the build).
     "pattern": ".",
     "action": ["python", "src/build/landmines.py"],
   },
 ]