Decouple CookieMonsterTest from CookieStoreTest.

net/cookies/cookie_store_test_helpers.h

Index: net/cookies/cookie_store_test_helpers.h
diff --git a/net/cookies/cookie_store_test_helpers.h b/net/cookies/cookie_store_test_helpers.h
index 760b847846c2ed3ff84d52a6eea718b6fde62e6f..1750c7f07bdf037d92d6e392b97a14b4743b7b20 100644
--- a/net/cookies/cookie_store_test_helpers.h
+++ b/net/cookies/cookie_store_test_helpers.h
@@ -70,7 +70,6 @@ class DelayedCookieMonster : public CookieStore {
                        const CookieChangedCallback& callback) override;
 
  private:
-
   // Be called immediately from CookieMonster.
 
   void SetCookiesInternalCallback(bool result);
@@ -96,6 +95,26 @@ class DelayedCookieMonster : public CookieStore {
   std::string cookie_line_;
 };
 
+class CookieURLHelper {
+ public:
+  explicit CookieURLHelper(const std::string& url_string);
+
+  const std::string& domain() const { return domain_and_registry_; }
+  std::string host() const { return url_.host(); }
+  const GURL& url() const { return url_; }
+  const GURL AppendPath(const std::string& path) const;
+
+  // Return a new string with the following substitutions:
+  // 1. "%R" -> Domain registry (i.e. "com")
+  // 2. "%D" -> Domain + registry (i.e. "google.com")
+  std::string Format(const std::string& format_string) const;
+
+ private:
+  const GURL url_;
+  const std::string registry_;
+  const std::string domain_and_registry_;
+};
+
 }  // namespace net
 
 #endif  // NET_COOKIES_COOKIE_STORE_TEST_HELPERS_H_