mash: Move system tray cast code into //ash/common

ash/common/system/chromeos/screen_security/screen_tray_item_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 "ash/system/chromeos/screen_security/screen_tray_item.h"
+#include "ash/common/system/chromeos/screen_security/screen_tray_item.h"
 
+#include "ash/common/system/chromeos/screen_security/screen_capture_tray_item.h"
+#include "ash/common/system/chromeos/screen_security/screen_share_tray_item.h"
 #include "ash/common/system/tray/system_tray_notifier.h"
 #include "ash/common/system/tray/tray_item_view.h"
 #include "ash/common/wm_shell.h"
-#include "ash/system/chromeos/screen_security/screen_capture_tray_item.h"
-#include "ash/system/chromeos/screen_security/screen_share_tray_item.h"
 #include "ash/test/ash_test_base.h"
 #include "base/callback.h"
 #include "base/strings/utf_string_conversions.h"
 #include "ui/events/event.h"
 #include "ui/events/event_utils.h"
 #include "ui/gfx/geometry/point.h"
 #include "ui/message_center/message_center.h"
 #include "ui/views/view.h"
 
 namespace ash {
@@ skipping 50 matching lines @@
 
   void SetUp() override {
     ScreenTrayItemTest::SetUp();
     // This tray item is owned by its parent system tray view and will
     // be deleted automatically when its parent is destroyed in AshTestBase.
     ScreenTrayItem* item = new ScreenCaptureTrayItem(GetPrimarySystemTray());
     GetPrimarySystemTray()->AddTrayItem(item);
     set_tray_item(item);
   }
 
+ private:
   DISALLOW_COPY_AND_ASSIGN(ScreenCaptureTest);
 };
 
 class ScreenShareTest : public ScreenTrayItemTest {
  public:
   ScreenShareTest() {}
   ~ScreenShareTest() override {}
 
   void SetUp() override {
     ScreenTrayItemTest::SetUp();
@@ skipping 118 matching lines @@
 
 TEST_F(ScreenCaptureTest, SystemTrayInteraction) {
   TestSystemTrayInteraction(this);
 }
 
 TEST_F(ScreenShareTest, SystemTrayInteraction) {
   TestSystemTrayInteraction(this);
 }
 
 }  // namespace ash