Remove calls to deprecated MessageLoop methods in content.

content/browser/fileapi/local_file_stream_reader_unittest.cc

 // Copyright 2014 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 "storage/browser/fileapi/local_file_stream_reader.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
@@ skipping 101 matching lines @@
 
   base::FilePath test_dir() const { return dir_.path(); }
   base::FilePath test_path() const { return dir_.path().AppendASCII("test"); }
   base::Time test_file_modification_time() const {
     return test_file_modification_time_;
   }
 
   void EnsureFileTaskFinished() {
     file_task_runner()->PostTaskAndReply(
         FROM_HERE, base::Bind(&EmptyCallback), base::Bind(&QuitLoop));
-    base::MessageLoop::current()->Run();
+    base::RunLoop().Run();
   }
 
  private:
   base::MessageLoopForIO message_loop_;
   base::Thread file_thread_;
   base::ScopedTempDir dir_;
   base::Time test_file_modification_time_;
 };
 
 TEST_F(LocalFileStreamReaderTest, NonExistent) {
@@ skipping 139 matching lines @@
   int rv = reader->Read(buf.get(), buf->size(), base::Bind(&NeverCalled));
   ASSERT_TRUE(rv == net::ERR_IO_PENDING || rv >= 0);
 
   // Delete immediately.
   // Should not crash; nor should NeverCalled be callback.
   reader.reset();
   EnsureFileTaskFinished();
 }
 
 }  // namespace content