Ensure tests have an active task runner

chrome/browser/spellchecker/feedback_sender_unittest.cc

 // Copyright (c) 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.
 //
 // Unit tests for |FeedbackSender| object.
 
 #include "chrome/browser/spellchecker/feedback_sender.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 123 matching lines @@
 
   std::string GetUploadData() const {
     const net::TestURLFetcher* fetcher =
         fetchers_.GetFetcherByID(kUrlFetcherId);
     return fetcher ? fetcher->upload_data() : std::string();
   }
 
   scoped_ptr<spellcheck::FeedbackSender> feedback_;
 
  private:
+  base::MessageLoop loop_;
   TestingProfile profile_;
-  base::MessageLoop loop_;
   content::TestBrowserThread ui_thread_;
   scoped_ptr<base::FieldTrialList> field_trial_list_;
   scoped_refptr<base::FieldTrial> field_trial_;
   net::TestURLFetcherFactory fetchers_;
 };
 
 // Do not send data if there's no feedback.
 TEST_F(FeedbackSenderTest, NoFeedback) {
   EXPECT_FALSE(IsUploadingData());
   feedback_->OnReceiveDocumentMarkers(kRendererProcessId,
@@ skipping 459 matching lines @@
   AddPendingFeedback();
   feedback_->OnReceiveDocumentMarkers(kRendererProcessId,
                                       std::vector<uint32>());
   feedback_->StartFeedbackCollection();
   feedback_->OnReceiveDocumentMarkers(kRendererProcessId,
                                       std::vector<uint32>());
   EXPECT_FALSE(IsUploadingData());
 }
 
 }  // namespace spellcheck