Fix IWYU for MessageLoop and RunLoop once again.

Round 3 of https: //chromium-review.googlesource.com/c/chromium/src/+/638550
Round 2 was: https://chromium-review.googlesource.com/667938

[email protected]

Bug: Missing includes prevents header cleanup in
https://chromium-review.googlesource.com/c/chromium/src/+/638550

Cq-Include-Trybots: master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win10_chromium_x64_rel_ng;master.tryserver.chromium.win:win_optional_gpu_tests_rel
Change-Id: I99f2d37cf342f2ed38d167b9dcc3c57173b2f9a2
Reviewed-on: https://chromium-review.googlesource.com/782663
Commit-Queue: Gabriel Charette <[email protected]>
Reviewed-by: Gabriel Charette <[email protected]>
Cr-Commit-Position: refs/heads/master@{#518388}
diff --git a/chrome/browser/safe_json_parser_browsertest.cc b/chrome/browser/safe_json_parser_browsertest.cc
index c8f11a2..a2c7076 100644
--- a/chrome/browser/safe_json_parser_browsertest.cc
+++ b/chrome/browser/safe_json_parser_browsertest.cc
@@ -7,6 +7,7 @@
 #include "base/bind.h"
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
+#include "base/run_loop.h"
 #include "base/values.h"
 #include "build/build_config.h"
 #include "chrome/test/base/in_process_browser_test.h"