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

chrome/browser/signin/signin_error_notifier_ash_unittest.cc

Index: chrome/browser/signin/signin_error_notifier_ash_unittest.cc
diff --git a/chrome/browser/signin/signin_error_notifier_ash_unittest.cc b/chrome/browser/signin/signin_error_notifier_ash_unittest.cc
index 8fe2d437f8bea7e0610fade33a6dccef42523fbe..497da309618a8e44aac14c09a79e033c5edd616c 100644
--- a/chrome/browser/signin/signin_error_notifier_ash_unittest.cc
+++ b/chrome/browser/signin/signin_error_notifier_ash_unittest.cc
@@ -33,6 +33,11 @@
 #include "ui/gfx/screen.h"
 #endif
 
+#if defined(OS_CHROMEOS)
+#include "chrome/browser/chromeos/login/users/mock_user_manager.h"
+#include "chrome/browser/chromeos/login/users/scoped_user_manager_enabler.h"
+#endif
+
 namespace ash {
 namespace test {
 
@@ -60,6 +65,12 @@ class SigninErrorNotifierTest : public AshTestBase {
         new TestingProfileManager(TestingBrowserProcess::GetGlobal()));
     ASSERT_TRUE(profile_manager_->SetUp());
 
+#if defined(OS_CHROMEOS)
+    mock_user_manager_ = new chromeos::MockUserManager();
+    user_manager_enabler_.reset(
+        new chromeos::ScopedUserManagerEnabler(mock_user_manager_));
+#endif
+
     TestingBrowserProcess::GetGlobal();
     AshTestBase::SetUp();
 
@@ -102,6 +113,10 @@ class SigninErrorNotifierTest : public AshTestBase {
   scoped_ptr<TestingProfile> profile_;
   SigninErrorController* error_controller_;
   NotificationUIManager* notification_ui_manager_;
+#if defined(OS_CHROMEOS)
+  chromeos::MockUserManager* mock_user_manager_;

[Mr4D (OOO till 08-26), 2016/04/14 17:44:25]

You might want to add a comment that this is owned by the user_manager_enabler_.

+  scoped_ptr<chromeos::ScopedUserManagerEnabler> user_manager_enabler_;
+#endif
 };
 
 TEST_F(SigninErrorNotifierTest, NoErrorAuthStatusProviders) {