Fix include path for moved thread_task_runner_handle.h header in components/

Changes made by tools/git/move_source_file.py

BUG=610438
TBR=caitkp

Review-Url: https://codereview.chromium.org/1970833002
Cr-Commit-Position: refs/heads/master@{#393046}
diff --git a/components/update_client/update_client_unittest.cc b/components/update_client/update_client_unittest.cc
index e5bbfb7..a869f9a 100644
--- a/components/update_client/update_client_unittest.cc
+++ b/components/update_client/update_client_unittest.cc
@@ -17,7 +17,7 @@
 #include "base/path_service.h"
 #include "base/run_loop.h"
 #include "base/test/sequenced_worker_pool_owner.h"
-#include "base/thread_task_runner_handle.h"
+#include "base/threading/thread_task_runner_handle.h"
 #include "base/values.h"
 #include "base/version.h"
 #include "components/prefs/testing_pref_service.h"