Fix wrong inclusion of .cc file in ash/

ash/accelerators/accelerator_interactive_uitest_chromeos.cc

 // Copyright 2015 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/accelerators/accelerator_controller.h"
 
 #include "ash/shell.h"
 #include "ash/shell_observer.h"
 #include "ash/system/network/network_observer.h"
 #include "ash/system/tray/system_tray_delegate.h"
 #include "ash/system/tray/system_tray_notifier.h"
 #include "ash/test/ash_interactive_ui_test_base.h"
 #include "ash/test/test_screenshot_delegate.h"
 #include "ash/wm/window_state.h"
 #include "ash/wm/window_state_aura.h"
 #include "ash/wm/window_util.h"
 #include "base/run_loop.h"
-#include "base/test/user_action_tester.cc"
+#include "base/test/user_action_tester.h"
 #include "chromeos/network/network_handler.h"
 #include "ui/app_list/presenter/app_list.h"
 #include "ui/app_list/presenter/test/test_app_list_presenter.h"
 #include "ui/base/test/ui_controls.h"
 
 namespace ash {
 namespace test {
 
 namespace {
 
@@ skipping 175 matching lines @@
   SendKeyPressSync(ui::VKEY_LWIN, false, false, false);
   RunAllPendingInMessageLoop();
   EXPECT_EQ(1u, test_app_list_presenter.toggle_count());
   SendKeyPressSync(ui::VKEY_LWIN, false, false, false);
   RunAllPendingInMessageLoop();
   EXPECT_EQ(2u, test_app_list_presenter.toggle_count());
 }
 
 }  // namespace test
 }  // namespace ash