GetAccountIdFromProfile() should not return an empty account id if a valid profile is provided.

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 2bd8072d177694e7f3f281d24ef8711c9302248d..12a149c382dab4719fb51fe50aa730c448250c5e 100644
--- a/chrome/browser/chromeos/profiles/profile_helper.h
+++ b/chrome/browser/chromeos/profiles/profile_helper.h
@@ -33,6 +33,10 @@ class MultiUserWindowManagerChromeOSTest;
 }  // namespace test
 }  // namespace ash
 
+namespace test {
+class BrowserFinderChromeOSTest;
+}  // namespace test
+
 namespace chromeos {
 
 class FileFlusher;
@@ -155,6 +159,7 @@ class ProfileHelper
   friend class SessionStateDelegateChromeOSTest;
   friend class SystemTrayDelegateChromeOSTest;
   friend class ash::test::MultiUserWindowManagerChromeOSTest;
+  friend class ::test::BrowserFinderChromeOSTest;
 
   // Called when signin profile is cleared.
   void OnSigninProfileCleared();