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..0e59281157311393718a29e18a714ba1fcbd2995 100644
--- a/net/url_request/url_request_redirect_job.cc
+++ b/net/url_request/url_request_redirect_job.cc
@@ -44,6 +44,13 @@ bool URLRequestRedirectJob::IsRedirectResponse(GURL* location,
   return true;
 }
 
+bool URLRequestRedirectJob::IsRedirectFragmentModificationAllowed(
+    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() {