Move FilePathWatcher to base/files.

base/files/file_path_watcher.h

Index: base/files/file_path_watcher.h
diff --git a/content/common/file_path_watcher/file_path_watcher.h b/base/files/file_path_watcher.h
similarity index 95%
rename from content/common/file_path_watcher/file_path_watcher.h
rename to base/files/file_path_watcher.h
index 094b04f98e15bb6a580dbf450f8dc92b2910d333..2cf95c6b63d2b758d62ab912d90a03252bfa0be8 100644
--- a/content/common/file_path_watcher/file_path_watcher.h
+++ b/base/files/file_path_watcher.h
@@ -4,8 +4,8 @@
 
 // This module provides a way to monitor a file or directory for changes.
 
-#ifndef CONTENT_COMMON_FILE_PATH_WATCHER_FILE_PATH_WATCHER_H_
-#define CONTENT_COMMON_FILE_PATH_WATCHER_FILE_PATH_WATCHER_H_
+#ifndef BASE_FILES_FILE_PATH_WATCHER_H_
+#define BASE_FILES_FILE_PATH_WATCHER_H_
 #pragma once
 
 #include "base/basictypes.h"
@@ -13,6 +13,9 @@
 #include "base/memory/ref_counted.h"
 #include "base/message_loop_proxy.h"
 
+namespace base {
+namespace files {
+
 // This class lets you register interest in changes on a FilePath.
 // The delegate will get called whenever the file or directory referenced by the
 // FilePath is changed, including created or deleted. Due to limitations in the
@@ -119,4 +122,7 @@ class FilePathWatcher {
   DISALLOW_COPY_AND_ASSIGN(FilePathWatcher);
 };
 
-#endif  // CONTENT_COMMON_FILE_PATH_WATCHER_FILE_PATH_WATCHER_H_
+}  // namespace files
+}  // namespace base
+
+#endif  // BASE_FILES_FILE_PATH_WATCHER_H_