chrome.py: Import arc_util unconditionally

We moved arc_util.py to public repos, so we can simply always import it.

BUG=b/28937952
BUG=chrome-os-partner:55067
TEST=test_that --board=oak 172.30.251.250 power_LoadTest

Change-Id: I01673a4d6a41ceb4428e5c7a5f33b9ca2892a861
Reviewed-on: https://chromium-review.googlesource.com/360937
Commit-Ready: Nicolas Boichat <drinkcat@chromium.org>
Tested-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>
diff --git a/client/common_lib/cros/chrome.py b/client/common_lib/cros/chrome.py
index 0a290af..5dfac27 100644
--- a/client/common_lib/cros/chrome.py
+++ b/client/common_lib/cros/chrome.py
@@ -4,6 +4,7 @@
 
 import logging, os, re
 
+from autotest_lib.client.common_lib.cros import arc_util
 from autotest_lib.client.cros import constants
 from autotest_lib.client.bin import utils
 from telemetry.core import cros_interface, exceptions, util
@@ -37,10 +38,6 @@
     return _arc_available
 
 
-if is_arc_available():
-    from autotest_lib.client.common_lib.cros import arc_util
-
-
 def NormalizeEmail(username):
     """Remove dots from username. Add @gmail.com if necessary.