Move FilePathWatcher class from browser/... to common/...

chrome/browser/policy/file_based_policy_loader.cc

 // Copyright (c) 2010 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/policy/file_based_policy_loader.h"
 
+#include "content/browser/browser_thread.h"
+
 namespace {
 
 // Amount of time we wait for the files on disk to settle before trying to load
 // them. This alleviates the problem of reading partially written files and
 // makes it possible to batch quasi-simultaneous changes.
 const int kSettleIntervalSeconds = 5;
 
 // The time interval for rechecking policy. This is our fallback in case the
 // delegate never reports a change to the ReloadObserver.
 const int kReloadIntervalMinutes = 15;
@@ skipping 69 matching lines @@
 
   PostUpdatePolicyTask(new_policy.release());
 
   ScheduleFallbackReloadTask();
 }
 
 void FileBasedPolicyLoader::InitOnFileThread() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
   watcher_.reset(new FilePathWatcher);
   if (!config_file_path().empty() &&
-      !watcher_->Watch(config_file_path(),
-                       new FileBasedPolicyWatcherDelegate(this))) {
+      !watcher_->Watch(
+          config_file_path(),
+          new FileBasedPolicyWatcherDelegate(this),
+          BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI))) {
     OnError();
   }
 
   // There might have been changes to the directory in the time between
   // construction of the loader and initialization of the watcher. Call reload
   // to detect if that is the case.
   Reload();
 
   ScheduleFallbackReloadTask();
 }
@@ skipping 27 matching lines @@
   base::TimeDelta age = now - last_modification_clock_;
   if (age < settle_interval_) {
     *delay = settle_interval_ - age;
     return false;
   }
 
   return true;
 }
 
 }  // namespace policy