Add support for almost-recursive watches in Linux DirectoryWatcher

chrome/browser/extensions/user_script_master.cc

Index: chrome/browser/extensions/user_script_master.cc
diff --git a/chrome/browser/extensions/user_script_master.cc b/chrome/browser/extensions/user_script_master.cc
index bcacf671ffb5fd81c9337a06da62769a051eb661..8b5e4d9d3a59b843a60386596704d42b3cdbd2a8 100644
--- a/chrome/browser/extensions/user_script_master.cc
+++ b/chrome/browser/extensions/user_script_master.cc
@@ -12,6 +12,8 @@
 #include "base/pickle.h"
 #include "base/stl_util-inl.h"
 #include "base/string_util.h"
+#include "base/thread.h"
+#include "chrome/browser/browser_process.h"
 #include "chrome/common/notification_service.h"
 #include "chrome/common/url_constants.h"
 #include "net/base/net_util.h"
@@ -271,7 +273,9 @@ void UserScriptMaster::AddWatchedPath(const FilePath& path) {
 // TODO(aa): Enable this when DirectoryWatcher is implemented for linux.

[Evan Martin, 2009/05/14 17:48:28]

I guess this TODO can be fixed now!  Maybe in a differnt CL if you prefer.

 #if defined(OS_WIN) || defined(OS_MACOSX)
   DirectoryWatcher* watcher = new DirectoryWatcher();
-  watcher->Watch(path, this, true);
+  base::Thread* file_thread = g_browser_process->file_thread();
+  watcher->Watch(path, this, file_thread ? file_thread->message_loop() : NULL,
+                 true);
   dir_watchers_.push_back(watcher);
 #endif
 }