Do not copy reference fragments for overridden redirects.

net/url_request/url_request_redirect_job.cc

Index: net/url_request/url_request_redirect_job.cc
diff --git a/net/url_request/url_request_redirect_job.cc b/net/url_request/url_request_redirect_job.cc
index c9d30aebedd432612dcd0ee1b839a181d485cfc6..818d4c397ec5dee4a69c2116851eb283b5d71b70 100644
--- a/net/url_request/url_request_redirect_job.cc
+++ b/net/url_request/url_request_redirect_job.cc
@@ -44,6 +44,12 @@ bool URLRequestRedirectJob::IsRedirectResponse(GURL* location,
   return true;
 }
 
+bool URLRequestRedirectJob::CopyFragmentOnRedirect(const GURL& location) const {
+  // The instantiators have full control over the desired redirection target,
+  // including the reference fragment part of the URL.
+  return false;
+}
+
 URLRequestRedirectJob::~URLRequestRedirectJob() {}
 
 void URLRequestRedirectJob::StartAsync() {