arc: Provide API to control Play Store state from autotests

chrome/browser/chromeos/arc/arc_util.cc

Index: chrome/browser/chromeos/arc/arc_util.cc
diff --git a/chrome/browser/chromeos/arc/arc_util.cc b/chrome/browser/chromeos/arc/arc_util.cc
index 3c40a7c2f950b82644f66845c0aada8f88eee9d2..2f4e03645b8034aa9c2f9aced7bd0f26b119705e 100644
--- a/chrome/browser/chromeos/arc/arc_util.cc
+++ b/chrome/browser/chromeos/arc/arc_util.cc
@@ -115,6 +115,10 @@ bool IsArcPlayStoreEnabledPreferenceManagedForProfile(const Profile* profile) {
 void SetArcPlayStoreEnabledForProfile(Profile* profile, bool enabled) {
   DCHECK(IsArcAllowedForProfile(profile));
   if (IsArcPlayStoreEnabledPreferenceManagedForProfile(profile)) {
+    if (enabled && !IsArcPlayStoreEnabledForProfile(profile)) {

[Luis Héctor Chávez, 2017/04/07 16:09:05]

IIUC (but I'm not entirely sure) this was added for testing purposes. Can you
run `git cl test`? If that fails, please move this check to the autotest api.

[khmel, 2017/04/07 19:23:19]

I remember I added this to enable restart ARC for managed case. No regression
was found during the 'git cl try'. Failure was due autotest browser test

+      LOG(WARNING) << "Attempt to enable disabled by policy ARC.";
+      return;
+    }
     VLOG(1) << "Google-Play-Store-enabled pref is managed. Request to "
             << (enabled ? "enable" : "disable") << " Play Store is not stored";
     // Need update ARC session manager manually for managed case in order to