Revert of Moves ash content specific tests into ash_content_unittests

ash/content/display/screen_orientation_controller_chromeos_unittest.cc

 // Copyright 2014 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/display/screen_orientation_controller_chromeos.h"
 
 #include <memory>
 #include <vector>
 
 #include "ash/common/ash_switches.h"
 #include "ash/common/wm/maximize_mode/maximize_mode_controller.h"
 #include "ash/common/wm_shell.h"
 #include "ash/content/shell_content_state.h"
 #include "ash/display/display_manager.h"
 #include "ash/shell.h"
 #include "ash/test/ash_test_base.h"
-#include "ash/test/ash_test_environment_content.h"
 #include "ash/test/ash_test_helper.h"
 #include "ash/test/content/test_shell_content_state.h"
 #include "ash/test/display_manager_test_api.h"
 #include "ash/test/test_shell_delegate.h"
 #include "ash/test/test_system_tray_delegate.h"
 #include "base/command_line.h"
 #include "chromeos/accelerometer/accelerometer_reader.h"
 #include "chromeos/accelerometer/accelerometer_types.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/web_contents.h"
@@ skipping 74 matching lines @@
 }
 
 }  // namespace
 
 class ScreenOrientationControllerTest : public test::AshTestBase {
  public:
   ScreenOrientationControllerTest();
   ~ScreenOrientationControllerTest() override;
 
   content::ScreenOrientationDelegate* delegate() {
-    test::AshTestEnvironmentContent* test_environment_content =
-        static_cast<test::AshTestEnvironmentContent*>(
-            ash_test_helper()->ash_test_environment());
-    return test_environment_content->test_shell_content_state()
+    return ash_test_helper()
+        ->test_shell_content_state()
         ->screen_orientation_delegate();
   }
 
   // Creates and initializes and empty content::WebContents that is backed by a
   // content::BrowserContext and that has an aura::Window.
   content::WebContents* CreateWebContents();
 
   // Creates a secondary content::WebContents, with a separate
   // content::BrowserContext.
   content::WebContents* CreateSecondaryWebContents();
@@ skipping 528 matching lines @@
 
   Shell::GetInstance()->screen_orientation_controller()->SetDisplayRotation(
       kNewRotation, display::Display::ROTATION_SOURCE_ACTIVE);
 
   EXPECT_EQ(
       kNewRotation,
       display_manager->GetDisplayInfo(kInternalDisplayId).GetActiveRotation());
 }
 
 }  // namespace ash