Revert of [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 13e122d20c2124764695ced649ab53221c4b5b44..5dfc89ab549e3e219c039955fd8bf1e8a5e3a99c 100644
--- a/content/child/url_response_body_consumer.h
+++ b/content/child/url_response_body_consumer.h
@@ -37,9 +37,6 @@
       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