Replace MessageLoop::current()->task_runner() with ThreadTaskRunnerHandle::Get().

components/browsing_data/content/conditional_cache_deletion_helper.cc

Index: components/browsing_data/content/conditional_cache_deletion_helper.cc
diff --git a/components/browsing_data/content/conditional_cache_deletion_helper.cc b/components/browsing_data/content/conditional_cache_deletion_helper.cc
index 4f4a4743597e8270518452e625ea14105d1b509b..416ad0ce8e71b529f3dad564e57e598e5486eb2e 100644
--- a/components/browsing_data/content/conditional_cache_deletion_helper.cc
+++ b/components/browsing_data/content/conditional_cache_deletion_helper.cc
@@ -79,7 +79,7 @@ void ConditionalCacheDeletionHelper::IterateOverEntries(int error) {
       // The iteration finished successfuly or we can no longer iterate
       // (e.g. the cache was destroyed). We cannot distinguish between the two,
       // but we know that there is nothing more that we can do, so we return OK.
-      base::MessageLoop::current()->task_runner()->PostTask(
+      base::ThreadTaskRunnerHandle::Get()->PostTask(
           FROM_HERE, base::Bind(completion_callback_, net::OK));
       base::ThreadTaskRunnerHandle::Get()->DeleteSoon(FROM_HERE, this);
       return;