Forcibly clear worker ref counts on shutdown.

chrome/browser/chrome_content_browser_client_unittest.cc

 // Copyright 2013 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/chrome_content_browser_client.h"
 
 #include <list>
 #include <map>
 #include <memory>
 
@@ skipping 485 matching lines @@
   void SetClearingFinished(bool finished) { finished_ = finished; }
 
   bool IsClearingFinished() { return finished_; }
 
  private:
   static std::unique_ptr<KeyedService> GetRemover(
       content::BrowserContext* context) {
     return base::WrapUnique(new MockBrowsingDataRemover(context));
   }
 
-  base::MessageLoop loop_;
+  content::TestBrowserThreadBundle thread_bundle_;
   TestingProfile profile_;
   bool finished_;
 };
 
 // Tests that the parameters to ClearBrowsingData() are translated to
 // the correct BrowsingDataRemover::RemoveInternal() operation. The fourth
 // parameter, |filter_builder|, is tested in detail in the RegistrableDomains
 // test below.
 TEST_F(ChromeContentBrowserClientClearSiteDataTest, Parameters) {
   ChromeContentBrowserClient client;
@@ skipping 190 matching lines @@
   client.ClearSiteData(
       profile(), origin, true /* cookies */, false /* storage */,
       true /* cache */,
       base::Bind(
           &ChromeContentBrowserClientClearSiteDataTest::SetClearingFinished,
           base::Unretained(this), true));
   EXPECT_TRUE(IsClearingFinished());
 }
 
 }  // namespace