chromeos: Move files in //ash/common to //ash, part 2

ash/system/tiles/tray_tiles_unittest.cc

 // Copyright 2016 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/tiles/tray_tiles.h"
 
-#include "ash/common/session/session_state_delegate.h"
-#include "ash/common/wm_shell.h"
+#include "ash/session/session_state_delegate.h"
 #include "ash/system/tiles/tiles_default_view.h"
 #include "ash/test/ash_test_base.h"
+#include "ash/wm_shell.h"
 #include "ui/views/controls/button/custom_button.h"
 #include "ui/views/view.h"
 
 namespace ash {
 
 class TrayTilesTest : public test::AshTestBase {
  public:
   TrayTilesTest() {}
   ~TrayTilesTest() override {}
 
@@ skipping 62 matching lines @@
 TEST_F(TrayTilesTest, ButtonStatesWithLoginStatusUser) {
   std::unique_ptr<views::View> default_view(
       tray_tiles()->CreateDefaultViewForTesting(LoginStatus::USER));
   EXPECT_EQ(GetSettingsButton()->state(), views::Button::STATE_NORMAL);
   EXPECT_EQ(GetHelpButton()->state(), views::Button::STATE_NORMAL);
   EXPECT_EQ(GetLockButton()->state(), views::Button::STATE_NORMAL);
   EXPECT_EQ(GetPowerButton()->state(), views::Button::STATE_NORMAL);
 }
 
 }  // namespace ash