Fix a couple small problems in base/

base/files/file_path_watcher_linux.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 "base/files/file_path_watcher.h"
 
 #include <errno.h>
 #include <string.h>
 #include <sys/inotify.h>
 #include <sys/ioctl.h>
@@ skipping 404 matching lines @@
   }
   watches_.clear();
   target_.clear();
 }
 
 void FilePathWatcherImpl::WillDestroyCurrentMessageLoop() {
   CancelOnMessageLoopThread();
 }
 
 bool FilePathWatcherImpl::UpdateWatches() {
-  // Ensure this runs on the message_loop_ exclusively in order to avoid
+  // Ensure this runs on the |message_loop_| exclusively in order to avoid
   // concurrency issues.
   DCHECK(message_loop()->BelongsToCurrentThread());
 
   // Walk the list of watches and update them as we go.
   FilePath path(FILE_PATH_LITERAL("/"));
   bool path_valid = true;
   for (WatchVector::iterator watch_entry(watches_.begin());
        watch_entry != watches_.end(); ++watch_entry) {
     InotifyReader::Watch old_watch = watch_entry->watch_;
     if (path_valid) {
@@ skipping 38 matching lines @@
 }
 
 }  // namespace
 
 FilePathWatcher::FilePathWatcher() {
   impl_ = new FilePathWatcherImpl();
 }
 
 }  // namespace files
 }  // namespace base