Remove URL fragment from referrer HTTP header when opening link using "Open Link in New Tab" option.

net/url_request/url_request.cc

Index: net/url_request/url_request.cc
diff --git a/net/url_request/url_request.cc b/net/url_request/url_request.cc
index c912c03673f1d8773f0b2cd1b1085b48e102eaf9..8af248c6c0cf18fa8f7045af396b688edde692c7 100644
--- a/net/url_request/url_request.cc
+++ b/net/url_request/url_request.cc
@@ -12,6 +12,7 @@
 #include "base/lazy_instance.h"
 #include "base/memory/singleton.h"
 #include "base/message_loop.h"
+#include "base/metrics/histogram.h"
 #include "base/metrics/stats_counters.h"
 #include "base/stl_util.h"
 #include "base/synchronization/lock.h"
@@ -488,23 +489,23 @@ void URLRequest::set_method(const std::string& method) {
   method_ = method;
 }
 
-void URLRequest::set_referrer(const std::string& referrer) {
+void URLRequest::SetReferrer(const std::string& referrer) {
   DCHECK(!is_pending_);
   referrer_ = referrer;
-}
-
-GURL URLRequest::GetSanitizedReferrer() const {
-  GURL ret(referrer());
-
-  // Ensure that we do not send username and password fields in the referrer.
-  if (ret.has_username() || ret.has_password()) {
+  // Ensure that we do not send URL fragment, username and password
+  // fields in the referrer.
+  GURL referrer_url(referrer);
+  UMA_HISTOGRAM_BOOLEAN("Net.URLRequest_SetReferrer_IsEmptyOrValid",
+                        referrer_url.is_empty() || referrer_url.is_valid());
+  if (referrer_url.is_valid() && (referrer_url.has_ref() ||
+      referrer_url.has_username() ||  referrer_url.has_password())) {
     GURL::Replacements referrer_mods;
+    referrer_mods.ClearRef();
     referrer_mods.ClearUsername();
     referrer_mods.ClearPassword();
-    ret = ret.ReplaceComponents(referrer_mods);
+    referrer_url = referrer_url.ReplaceComponents(referrer_mods);
+    referrer_ = referrer_url.spec();
   }
-
-  return ret;
 }
 
 void URLRequest::set_referrer_policy(ReferrerPolicy referrer_policy) {