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

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

Index: chrome/browser/sync/test/integration/typed_urls_helper.h
diff --git a/chrome/browser/sync/test/integration/typed_urls_helper.h b/chrome/browser/sync/test/integration/typed_urls_helper.h
index b7a39bfcff2846aa1de1d683cb34fde6a3b4f468..2792559261f45d57202e26353c6aa698e4b9b2c2 100644
--- a/chrome/browser/sync/test/integration/typed_urls_helper.h
+++ b/chrome/browser/sync/test/integration/typed_urls_helper.h
@@ -5,8 +5,10 @@
 #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"
 
@@ -67,9 +69,6 @@ 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,
@@ -95,4 +94,14 @@ 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_