[Mojo-Loading] Dispatch body data after response is received

content/child/url_response_body_consumer.h

Index: content/child/url_response_body_consumer.h
diff --git a/content/child/url_response_body_consumer.h b/content/child/url_response_body_consumer.h
index 5dfc89ab549e3e219c039955fd8bf1e8a5e3a99c..13e122d20c2124764695ced649ab53221c4b5b44 100644
--- a/content/child/url_response_body_consumer.h
+++ b/content/child/url_response_body_consumer.h
@@ -37,6 +37,9 @@ class CONTENT_EXPORT URLResponseBodyConsumer final
       mojo::ScopedDataPipeConsumerHandle handle,
       scoped_refptr<base::SingleThreadTaskRunner> task_runner);
 
+  // Starts watching the handle.
+  void Start(base::SingleThreadTaskRunner* task_runner);
+
   // Sets the completion status. The completion status is dispatched to the
   // ResourceDispatcher when the both following conditions hold:
   //  1) This function has been called and the completion status is set, and