Fix Arc integration test.

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 2104e1e187eb12d1715e6da67f8796d71d4f5457..9ad7ced15573b112655d6ac34db28d8b9b1e4233 100644
--- a/chrome/browser/chromeos/profiles/profile_helper.h
+++ b/chrome/browser/chromeos/profiles/profile_helper.h
@@ -29,10 +29,6 @@ namespace extensions {
 class ExtensionGarbageCollectorChromeOSUnitTest;
 }
 
-namespace arc {
-class SyncArcPackageHelper;
-}
-
 namespace ash {
 namespace test {
 class MultiUserWindowManagerChromeOSTest;
@@ -169,7 +165,6 @@ class ProfileHelper
   friend class ProfileListChromeOSTest;
   friend class SessionStateDelegateChromeOSTest;
   friend class SystemTrayDelegateChromeOSTest;
-  friend class arc::SyncArcPackageHelper;
   friend class ash::test::MultiUserWindowManagerChromeOSTest;
   friend class ::ArcAppTest;
   friend class ::test::BrowserFinderChromeOSTest;