Revert of Moves ash content specific tests into ash_content_unittests

chrome/test/base/browser_with_test_window_test.h

Index: chrome/test/base/browser_with_test_window_test.h
diff --git a/chrome/test/base/browser_with_test_window_test.h b/chrome/test/base/browser_with_test_window_test.h
index 67989c246fed095f9dbefb240b5590e1d2433401..ba85e3ff4712c396301b24756b58d21c40b05bbe 100644
--- a/chrome/test/base/browser_with_test_window_test.h
+++ b/chrome/test/base/browser_with_test_window_test.h
@@ -31,7 +31,6 @@
 #if defined(OS_CHROMEOS)
 namespace ash {
 namespace test {
-class AshTestEnvironment;
 class AshTestHelper;
 }
 }
@@ -172,7 +171,6 @@
   content::RenderViewHostTestEnabler rvh_test_enabler_;
 
 #if defined(OS_CHROMEOS)
-  std::unique_ptr<ash::test::AshTestEnvironment> ash_test_environment_;
   std::unique_ptr<ash::test::AshTestHelper> ash_test_helper_;
 #elif defined(TOOLKIT_VIEWS)
   std::unique_ptr<views::ScopedViewsTestHelper> views_test_helper_;