Fix spacing issues on Ash shelf

ash/common/test/test_system_tray_delegate.h

Index: ash/common/test/test_system_tray_delegate.h
diff --git a/ash/common/test/test_system_tray_delegate.h b/ash/common/test/test_system_tray_delegate.h
index 0e86de12d3d8a0c897b1efc831c65725c4538ede..ffbd94fa8f3df79300fd63fe18bb3d5f1e308689 100644
--- a/ash/common/test/test_system_tray_delegate.h
+++ b/ash/common/test/test_system_tray_delegate.h
@@ -18,11 +18,6 @@ class TestSystemTrayDelegate : public DefaultSystemTrayDelegate {
   TestSystemTrayDelegate();
   ~TestSystemTrayDelegate() override;
 
-  // Sets whether a system update is required. Defaults to false. Static so
-  // tests can set the value before the system tray is constructed. Reset in
-  // AshTestHelper::TearDown.
-  static void SetSystemUpdateRequired(bool required);
-
   // Changes the current login status in the test. This also invokes
   // UpdateAfterLoginStatusChange(). Usually this is called in the test code to
   // set up a login status. This will fit to most of the test cases, but this