Adds web::Referrer.

This is the //web analogue of content::Referrer.

BUG=422033
TEST=None

Review URL: https://codereview.chromium.org/670203002

Cr-Commit-Position: refs/heads/master@{#300775}

2 files changed, 35 insertions, 0 deletions

diff --git a/ios/web/ios_web.gyp b/ios/web/ios_web.gyp
index 1742121..c092fd2 100644
--- a/ios/web/ios_web.gyp
+++ b/ios/web/ios_web.gyp
@@ -20,6 +20,7 @@
         'public/favicon_status.cc',
         'public/favicon_status.h',
         'public/navigation_item.h',
+        'public/referrer.h',
         'public/security_style.h',
         'public/ssl_status.cc',
         'public/ssl_status.h',
diff --git a/ios/web/public/referrer.h b/ios/web/public/referrer.h
new file mode 100644
index 0000000..3110c89
--- /dev/null
+++ b/ios/web/public/referrer.h
@@ -0,0 +1,34 @@
+// 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.
+
+#ifndef IOS_WEB_PUBLIC_REFERRER_H_
+#define IOS_WEB_PUBLIC_REFERRER_H_
+
+#include "base/logging.h"
+#include "url/gurl.h"
+
+namespace web {
+
+enum ReferrerPolicy {
+  ReferrerPolicyAlways,
+  ReferrerPolicyDefault,
+  ReferrerPolicyNever,
+  ReferrerPolicyOrigin,
+  ReferrerPolicyLast = ReferrerPolicyOrigin
+};
+
+// This struct holds a referrer URL, as well as the referrer policy to be
+// applied to this URL. When passing around referrers that will eventually end
+// up being used for URL requests, always use this struct.
+struct Referrer {
+  Referrer(const GURL& url, ReferrerPolicy policy) : url(url), policy(policy) {}
+  Referrer() : policy(ReferrerPolicyDefault) {}
+
+  GURL url;
+  ReferrerPolicy policy;
+};
+
+}  // namespace web
+
+#endif  // IOS_WEB_PUBLIC_REFERRER_H_