Teach mojo::Watcher in URLResponseBodyConsumer the correct task runner

content/child/resource_dispatcher.cc

Index: content/child/resource_dispatcher.cc
diff --git a/content/child/resource_dispatcher.cc b/content/child/resource_dispatcher.cc
index ba2e76be7369227031660b7d64e8c7b19dca6659..700883705d88c71aa80c2fc345e2dfe4953bac18 100644
--- a/content/child/resource_dispatcher.cc
+++ b/content/child/resource_dispatcher.cc
@@ -98,7 +98,7 @@ class URLLoaderClientImpl final : public mojom::URLLoaderClient {
       mojo::ScopedDataPipeConsumerHandle body) override {
     DCHECK(!body_consumer_);
     body_consumer_ = new URLResponseBodyConsumer(
-        request_id_, resource_dispatcher_, std::move(body), task_runner_.get());
+        request_id_, resource_dispatcher_, std::move(body), task_runner_);
   }
 
   void OnComplete(const ResourceRequestCompletionStatus& status) override {