Release the cache entry on deferred redirect.

net/url_request/url_request_job.cc

Index: net/url_request/url_request_job.cc
diff --git a/net/url_request/url_request_job.cc b/net/url_request/url_request_job.cc
index 669c845de98ca142f111d00369c0d00075b0d65b..5ad78a23332735ae8622d8e59efe53144b2e591c 100644
--- a/net/url_request/url_request_job.cc
+++ b/net/url_request/url_request_job.cc
@@ -319,6 +319,11 @@ void URLRequestJob::NotifyHeadersComplete() {
       new_location = new_location.ReplaceComponents(replacements);
     }
 
+    // Tell lower-level layers to ignore the response body. This is
+    // both so the request is cached and to release the cache entry
+    // for future requests to access.
+    DoneReading();
+
     bool defer_redirect = false;
     request_->NotifyReceivedRedirect(new_location, &defer_redirect);