Remove FilePathWatcher::PlatformDelegate::CancelOnMessageLoopThread().

base/files/file_path_watcher_win.cc

 // Copyright (c) 2011 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/files/file_path_watcher.h"
 
 #include "base/bind.h"
 #include "base/files/file.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
@@ skipping 41 matching lines @@
                                bool recursive,
                                HANDLE* handle) WARN_UNUSED_RESULT;
 
   // (Re-)Initialize the watch handle.
   bool UpdateWatch() WARN_UNUSED_RESULT;
 
   // Destroy the watch handle.
   void DestroyWatch();
 
   // Cleans up and stops observing the |task_runner_| thread.
-  void CancelOnMessageLoopThread() override;
+  void CancelOnMessageLoopThread();
 
   // Callback to notify upon changes.
   FilePathWatcher::Callback callback_;
 
   // Path we're supposed to watch (passed to callback).
   FilePath target_;
 
   // Handle for FindFirstChangeNotification.
   HANDLE handle_;
 
@@ skipping 41 matching lines @@
 
 void FilePathWatcherImpl::Cancel() {
   if (callback_.is_null()) {
     // Watch was never called, or the |task_runner_| has already quit.
     set_cancelled();
     return;
   }
 
   // Switch to the file thread if necessary so we can stop |watcher_|.
   if (!task_runner()->BelongsToCurrentThread()) {
-    task_runner()->PostTask(FROM_HERE, Bind(&FilePathWatcher::CancelWatch,
-                                            make_scoped_refptr(this)));
+    task_runner()->PostTask(
+        FROM_HERE, Bind(&FilePathWatcherImpl::CancelOnMessageLoopThread, this));
   } else {
     CancelOnMessageLoopThread();
   }
 }
 
 void FilePathWatcherImpl::CancelOnMessageLoopThread() {
   DCHECK(task_runner()->BelongsToCurrentThread());
   set_cancelled();
 
   if (handle_ != INVALID_HANDLE_VALUE)
@@ skipping 156 matching lines @@
   handle_ = INVALID_HANDLE_VALUE;
 }
 
 }  // namespace
 
 FilePathWatcher::FilePathWatcher() {
   impl_ = new FilePathWatcherImpl();
 }
 
 }  // namespace base