Makes a couple of tests properly delete aura state. These tests don't

chrome/browser/ui/tab_contents/test_tab_contents_wrapper.cc

 // Copyright (c) 2011 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 "chrome/browser/ui/tab_contents/test_tab_contents_wrapper.h"
 
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/browser/tab_contents/test_tab_contents.h"
 
@@ skipping 26 matching lines @@
 void TabContentsWrapperTestHarness::TearDown() {
   contents_wrapper_.reset();
 
   // Make sure that we flush any messages related to TabContents destruction
   // before we destroy the browser context.
   MessageLoop::current()->RunAllPending();
 
   // Release the browser context on the UI thread.
   message_loop_.DeleteSoon(FROM_HERE, browser_context_.release());
   message_loop_.RunAllPending();
+
+  ChromeRenderViewHostTestHarness::TearDown();
 }