Remove non-cros support from ash/common/system.

ash/common/system/user/tray_user_unittest.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <vector>
 
 #include "ash/common/material_design/material_design_controller.h"
 #include "ash/common/shell_delegate.h"
 #include "ash/common/system/tray/system_tray.h"
 #include "ash/common/system/tray/tray_constants.h"
@@ skipping 175 matching lines @@
   views::View* view =
       tray_user(0)->user_view_for_test()->user_card_view_for_test();
   ui::AXNodeData node_data;
   view->GetAccessibleNodeData(&node_data);
   EXPECT_EQ(
       base::UTF8ToUTF16("Über tray Über tray Über tray Über tray First@tray"),
       node_data.GetString16Attribute(ui::AX_ATTR_NAME));
   EXPECT_EQ(ui::AX_ROLE_BUTTON, node_data.role);
 }
 
-#if defined(OS_CHROMEOS)
 // Make sure that in multi user mode the user panel can be activated and there
 // will be one panel for each user plus one additional separator at the end.
 // Note: the mouse watcher (for automatic closing upon leave) cannot be tested
 // here since it does not work with the event system in unit tests.
 TEST_F(TrayUserTest, MultiUserModeDoesNotAllowToAddUser) {
   InitializeParameters(1, true);
 
   // Move the mouse over the status area and click to open the status menu.
   ui::test::EventGenerator& generator = GetEventGenerator();
   generator.set_async(false);
@@ skipping 65 matching lines @@
   const user_manager::UserInfo* active_user = delegate()->GetActiveUserInfo();
   const user_manager::UserInfo* second_user = delegate()->GetUserInfo(1);
   EXPECT_EQ(active_user->GetAccountId(), second_user->GetAccountId());
   // Since the name is capitalized, the email should be different than the
   // user_id.
   EXPECT_NE(active_user->GetAccountId().GetUserEmail(),
             second_user->GetDisplayEmail());
   tray()->CloseSystemBubble();
 }
 
-#endif
-
 }  // namespace ash