chrome/browser: Remove use of MessageLoopProxy and deprecated MessageLoop APIs

chrome/browser/download/download_test_file_activity_observer.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 "chrome/browser/download/download_test_file_activity_observer.h"
 
 #include "base/bind.h"
-#include "base/message_loop/message_loop.h"
+#include "base/location.h"
+#include "base/single_thread_task_runner.h"
+#include "base/thread_task_runner_handle.h"
 #include "chrome/browser/download/chrome_download_manager_delegate.h"
 #include "chrome/browser/download/download_service.h"
 #include "chrome/browser/download/download_service_factory.h"
 #include "chrome/browser/profiles/profile.h"
 
 namespace content {
 class DownloadItem;
 }
 
 // Test ChromeDownloadManagerDelegate that controls whether how file chooser
@@ skipping 27 matching lines @@
   base::WeakPtr<MockDownloadManagerDelegate> GetWeakPtr() {
     return weak_ptr_factory_.GetWeakPtr();
   }
 
  protected:
   void PromptUserForDownloadPath(
       content::DownloadItem* item,
       const base::FilePath& suggested_path,
       const FileSelectedCallback& callback) override {
     file_chooser_displayed_ = true;
-    base::MessageLoop::current()->PostTask(
-        FROM_HERE, base::Bind(callback, (file_chooser_enabled_ ? suggested_path
-                                         : base::FilePath())));
+    base::ThreadTaskRunnerHandle::Get()->PostTask(
+        FROM_HERE,
+        base::Bind(callback, (file_chooser_enabled_ ? suggested_path
+                                                    : base::FilePath())));
   }
 
   void OpenDownload(content::DownloadItem* item) override {}
 
  private:
   bool file_chooser_enabled_;
   bool file_chooser_displayed_;
   base::WeakPtrFactory<MockDownloadManagerDelegate> weak_ptr_factory_;
 };
 
@@ skipping 11 matching lines @@
 
 void DownloadTestFileActivityObserver::EnableFileChooser(bool enable) {
   if (test_delegate_.get())
     test_delegate_->EnableFileChooser(enable);
 }
 
 bool DownloadTestFileActivityObserver::TestAndResetDidShowFileChooser() {
   return test_delegate_.get() &&
       test_delegate_->TestAndResetDidShowFileChooser();
 }