Add calls to WrapCurrentThread and UnwrapCurrentThread.

third_party/libjingle_xmpp/task_runner/task_unittest.cc

Index: third_party/libjingle_xmpp/task_runner/task_unittest.cc
diff --git a/third_party/libjingle_xmpp/task_runner/task_unittest.cc b/third_party/libjingle_xmpp/task_runner/task_unittest.cc
index 7408ec4ae229274ff4011c36a58815a52a9214fe..8618f26f2244f4a8e921b70a1c12f9c5ddd27f9d 100644
--- a/third_party/libjingle_xmpp/task_runner/task_unittest.cc
+++ b/third_party/libjingle_xmpp/task_runner/task_unittest.cc
@@ -97,6 +97,9 @@ class HappyTask : public IdTimeoutTask {
 
 class MyTaskRunner : public TaskRunner {
  public:
+  MyTaskRunner() { ThreadManager::Instance()->WrapCurrentThread(); }
+  ~MyTaskRunner() { ThreadManager::Instance()->UnwrapCurrentThread(); }
+
   virtual void WakeTasks() { RunTasks(); }
   virtual int64_t CurrentTime() { return GetCurrentTime(); }