[Merge to M53] arc: Integration test for Arc package Chrome sync.

chrome/browser/chromeos/profiles/profile_helper.h

Index: chrome/browser/chromeos/profiles/profile_helper.h
diff --git a/chrome/browser/chromeos/profiles/profile_helper.h b/chrome/browser/chromeos/profiles/profile_helper.h
index 3d8a2cac289eef260e1a67a8f51b923ef4226658..038c9b6b72908938083c2d338221940305774989 100644
--- a/chrome/browser/chromeos/profiles/profile_helper.h
+++ b/chrome/browser/chromeos/profiles/profile_helper.h
@@ -27,6 +27,10 @@ namespace extensions {
 class ExtensionGarbageCollectorChromeOSUnitTest;
 }
 
+namespace arc {
+class SyncArcPackageHelper;
+}
+
 namespace ash {
 namespace test {
 class MultiUserWindowManagerChromeOSTest;
@@ -158,6 +162,7 @@ class ProfileHelper
   friend class ProfileListChromeOSTest;
   friend class SessionStateDelegateChromeOSTest;
   friend class SystemTrayDelegateChromeOSTest;
+  friend class arc::SyncArcPackageHelper;
   friend class ash::test::MultiUserWindowManagerChromeOSTest;
   friend class ::test::BrowserFinderChromeOSTest;