Revert of aura: Require explicit ownership of the Env instance.

ui/views/run_all_unittests.cc

Index: ui/views/run_all_unittests.cc
diff --git a/ui/views/run_all_unittests.cc b/ui/views/run_all_unittests.cc
index 3330e5756a7886a4f22363c25ed83881b5066676..6983bd64bffcb748acbbf6e542b269deaa5f8f33 100644
--- a/ui/views/run_all_unittests.cc
+++ b/ui/views/run_all_unittests.cc
@@ -31,22 +31,19 @@
     ASSERT_TRUE(PathService::Get(ui::UI_TEST_PAK, &ui_test_pak_path));
     ui::ResourceBundle::InitSharedInstanceWithPakPath(ui_test_pak_path);
 #if defined(USE_AURA)
-    env_ = aura::Env::CreateInstance();
+    aura::Env::CreateInstance(true);
 #endif
   }
 
   void Shutdown() override {
 #if defined(USE_AURA)
-    env_.reset();
+    aura::Env::DeleteInstance();
 #endif
     ui::ResourceBundle::CleanupSharedInstance();
     base::TestSuite::Shutdown();
   }
 
  private:
-#if defined(USE_AURA)
-  scoped_ptr<aura::Env> env_;
-#endif
   DISALLOW_COPY_AND_ASSIGN(ViewTestSuite);
 };