Don't use base::MessageLoop::{Quit,QuitClosure} in chrome/

chrome/browser/autocomplete/history_url_provider_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 "components/omnibox/browser/history_url_provider.h"
 
 #include <algorithm>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 230 matching lines @@
   }
 
   void TearDown() override {
     HistoryURLProviderTest::TearDown();
     DefaultSearchManager::SetFallbackSearchEnginesDisabledForTesting(false);
   }
 };
 
 void HistoryURLProviderTest::OnProviderUpdate(bool updated_matches) {
   if (autocomplete_->done())
-    base::MessageLoop::current()->Quit();
+    base::MessageLoop::current()->QuitWhenIdle();
 }
 
 bool HistoryURLProviderTest::SetUpImpl(bool no_db) {
   profile_.reset(new TestingProfile());
   client_.reset(new ChromeAutocompleteProviderClient(profile_.get()));
   if (!(profile_->CreateHistoryService(true, no_db)))
     return false;
   if (!no_db) {
     profile_->BlockUntilHistoryProcessesPendingRequests();
     profile_->BlockUntilHistoryIndexIsRefreshed();
@@ skipping 792 matching lines @@
     // the default experimental scoring.
     autocomplete_->scoring_params_.experimental_scoring_enabled = true;
     ASSERT_NO_FATAL_FAILURE(RunTest(ASCIIToUTF16(test_cases[i].input),
                                     std::string(), false, output, max_matches));
     for (int j = 0; j < max_matches; ++j) {
       EXPECT_EQ(test_cases[i].matches[j].experiment_relevance,
                 matches_[j].relevance);
     }
   }
 }