Move FilePathWatcher to base/files.

base/files/file_path_watcher_linux.cc

Index: base/files/file_path_watcher_linux.cc
diff --git a/content/common/file_path_watcher/file_path_watcher_inotify.cc b/base/files/file_path_watcher_linux.cc
similarity index 99%
rename from content/common/file_path_watcher/file_path_watcher_inotify.cc
rename to base/files/file_path_watcher_linux.cc
index f91756f6efe8d20493f849c76ac63e9f9a392756..844a581c8ab9c22f234cb332135b94295b7fc434 100644
--- a/content/common/file_path_watcher/file_path_watcher_inotify.cc
+++ b/base/files/file_path_watcher_linux.cc
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "content/common/file_path_watcher/file_path_watcher.h"
+#include "base/files/file_path_watcher.h"
 
 #include <errno.h>
 #include <string.h>
@@ -29,6 +29,8 @@
 #include "base/task.h"
 #include "base/threading/thread.h"
 
+using ::base::files::FilePathWatcher;
+
 namespace {
 
 class FilePathWatcherImpl;