sync: more debugging for crash in ChromeSystemResources

chrome/browser/sync/notifier/chrome_system_resources.h

Index: chrome/browser/sync/notifier/chrome_system_resources.h
diff --git a/chrome/browser/sync/notifier/chrome_system_resources.h b/chrome/browser/sync/notifier/chrome_system_resources.h
index 2248aaed12e673d5e2ff6652508cc0496480e839..b6e6256685dc0767ed7a59f457ac47f3817ae890 100644
--- a/chrome/browser/sync/notifier/chrome_system_resources.h
+++ b/chrome/browser/sync/notifier/chrome_system_resources.h
@@ -13,6 +13,7 @@
 #include <set>
 #include <string>
 
+#include "base/message_loop.h"
 #include "base/non_thread_safe.h"
 #include "base/scoped_ptr.h"
 #include "base/task.h"
@@ -58,6 +59,9 @@ class ChromeSystemResources : public invalidation::SystemResources {
   std::set<invalidation::Closure*> posted_tasks_;
   StateWriter* state_writer_;
 
+  // TODO(tim): Trying to debug bug crbug.com/64652.
+  const MessageLoop* created_on_loop_;
+
   // If the scheduler has been started, inserts |task| into
   // |posted_tasks_| and returns a Task* to post.  Otherwise,
   // immediately deletes |task| and returns NULL.