Add a referrer class to be used in the browser process whenever passing around referrsr

content/browser/tab_contents/referrer_unittest.cc

Index: content/browser/tab_contents/referrer_unittest.cc
diff --git a/content/browser/tab_contents/referrer_unittest.cc b/content/browser/tab_contents/referrer_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..476177def90b39967781f2080ef35f4134884179
--- /dev/null
+++ b/content/browser/tab_contents/referrer_unittest.cc
@@ -0,0 +1,33 @@
+// Copyright (c) 2011 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 "testing/gtest/include/gtest/gtest.h"
+
+#include "content/browser/tab_contents/referrer.h"
+
+namespace {
+
+const char* kTestURL = "http://google.com/";
+
+// Check that copying Referrer objects works.
+TEST(ReferrerTest, Copy) {
+  content::Referrer r1(GURL(kTestURL), WebKit::WebReferrerPolicyAlways);
+  content::Referrer r2;
+
+  r2 = r1;
+  EXPECT_EQ(GURL(kTestURL), r2.referrer());
+  EXPECT_EQ(WebKit::WebReferrerPolicyAlways, r2.referrer_policy());
+}
+
+// Check that checking Referrer objects for equality works.
+TEST(ReferrerTest, Equality) {
+  content::Referrer r1(GURL(kTestURL), WebKit::WebReferrerPolicyAlways);
+  content::Referrer r2(GURL(kTestURL), WebKit::WebReferrerPolicyAlways);
+  content::Referrer r3(GURL(kTestURL), WebKit::WebReferrerPolicyOrigin);
+
+  EXPECT_EQ(r1, r2);
+  EXPECT_NE(r1, r3);
+}
+
+}  // namespace