GTTF: Make EmbeddedTestServer always use its own thread for IO

chrome/browser/search_engines/template_url_fetcher_unittest.cc

 // Copyright (c) 2012 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 "base/file_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/path_service.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/search_engines/template_url.h"
@@ skipping 90 matching lines @@
   test_->DestroyedCallback(this);
 }
 
 void TemplateURLFetcherTestCallbacks::ConfirmAddSearchProvider(
     TemplateURL* template_url,
     Profile* profile) {
   test_->ConfirmAddSearchProvider(template_url, profile);
 }
 
 TemplateURLFetcherTest::TemplateURLFetcherTest()
-    : test_server_(
-        content::BrowserThread::GetMessageLoopProxyForThread(
-            content::BrowserThread::IO)),
-      callbacks_destroyed_(0),
+    : callbacks_destroyed_(0),
       add_provider_called_(0),
       waiting_for_download_(false) {
   base::FilePath src_dir;
   CHECK(PathService::Get(base::DIR_SOURCE_ROOT, &src_dir));
   test_server_.ServeFilesFromDirectory(
       src_dir.AppendASCII("chrome/test/data"));
 }
 
 void TemplateURLFetcherTest::DestroyedCallback(
     TemplateURLFetcherTestCallbacks* callbacks) {
@@ skipping 196 matching lines @@
   StartDownload(keyword, osdd_file_name,
                 TemplateURLFetcher::EXPLICIT_PROVIDER, true);
   ASSERT_EQ(0, add_provider_called_);
   ASSERT_EQ(1, callbacks_destroyed_);
 
   WaitForDownloadToFinish();
   ASSERT_EQ(1, add_provider_called_);
   ASSERT_EQ(2, callbacks_destroyed_);
   ASSERT_TRUE(last_callback_template_url_.get());
 }