[Sync] Refactoring of sync integration test checkers to remove boilerplate await methods.

chrome/browser/sync/test/integration/typed_urls_helper.h

 // Copyright (c) 2012 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 CHROME_BROWSER_SYNC_TEST_INTEGRATION_TYPED_URLS_HELPER_H_
 #define CHROME_BROWSER_SYNC_TEST_INTEGRATION_TYPED_URLS_HELPER_H_
 
+#include <string>
 #include <vector>
 
+#include "chrome/browser/sync/test/integration/multi_client_status_change_checker.h"
 #include "components/history/core/browser/history_types.h"
 #include "ui/base/page_transition_types.h"
 
 namespace base {
 class Time;
 }
 
 namespace typed_urls_helper {
 
 // Gets the typed URLs from a specific sync profile.
@@ skipping 40 matching lines @@
 // Deletes a list of URLs from the history DB for a specific sync
 // profile.
 void DeleteUrlsFromHistory(int index, const std::vector<GURL>& urls);
 
 // Modifies an URL stored in history by setting a new title.
 void SetPageTitle(int index, const GURL& url, const std::string& title);
 
 // Returns true if all clients have the same URLs.
 bool CheckAllProfilesHaveSameURLs();
 
-// Returns true if all clients have the same URLs before the timeout.
-bool AwaitCheckAllProfilesHaveSameURLs();
-
 // Checks that the two vectors contain the same set of URLRows (possibly in
 // a different order).
 bool CheckURLRowVectorsAreEqual(const history::URLRows& left,
                                 const history::URLRows& right);
 
 // Checks that the passed URLRows are equivalent.
 bool CheckURLRowsAreEqual(const history::URLRow& left,
                           const history::URLRow& right);
 
 // Returns true if two sets of visits are equivalent.
 bool AreVisitsEqual(const history::VisitVector& visit1,
                     const history::VisitVector& visit2);
 
 // Returns true if there are no duplicate visit times.
 bool AreVisitsUnique(const history::VisitVector& visits);
 
 // Returns a unique timestamp to use when generating page visits
 // (HistoryService does not like having identical timestamps and will modify
 // the timestamps behind the scenes if it encounters them, which leads to
 // spurious test failures when the resulting timestamps aren't what we
 // expect).
 base::Time GetTimestamp();
 
 }  // namespace typed_urls_helper
 
+// Checker that blocks until all clients have the same URLs.
+class ProfilesHaveSameURLsChecker : public MultiClientStatusChangeChecker {
+ public:
+  ProfilesHaveSameURLsChecker();
+
+  // Implementation of StatusChangeChecker.
+  bool IsExitConditionSatisfied() override;
+  std::string GetDebugMessage() const override;
+};
+
 #endif  // CHROME_BROWSER_SYNC_TEST_INTEGRATION_TYPED_URLS_HELPER_H_