Introduce url::Origin to represent Web Origin.

content/common/serialized_origin.cc

+// Copyright 2014 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 "content/common/serialized_origin.h"
+
+#include <string>
+
+#include "third_party/WebKit/public/platform/WebString.h"
+
+namespace content {
+
+SerializedOrigin::SerializedOrigin() {}
+
+SerializedOrigin::SerializedOrigin(const std::string& origin)
+    : string(origin) {}
+
+SerializedOrigin::SerializedOrigin(const blink::WebString& origin)
+    : string(origin.utf8()) {}
+
+}  // namespace content