Upstream (most of) ios/web/public

ios/web/url_util.cc

Index: ios/web/url_util.cc
diff --git a/ios/web/url_util.cc b/ios/web/url_util.cc
new file mode 100644
index 0000000000000000000000000000000000000000..4bd21721b5f7526f0bf7b852b456c5dcb7a5f754
--- /dev/null
+++ b/ios/web/url_util.cc
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+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ios/web/public/url_util.h"
+
+namespace web {
+
+GURL GURLByRemovingRefFromGURL(const GURL& full_url) {
+  if (!full_url.has_ref())
+    return full_url;
+
+  GURL::Replacements replacements;
+  replacements.ClearRef();
+  return full_url.ReplaceComponents(replacements);
+}
+
+}  // namespace web