Port HistoryService::QueryRedirects{From,To} to CancelableTaskTracker

chrome/browser/history/history_types.h

Index: chrome/browser/history/history_types.h
diff --git a/chrome/browser/history/history_types.h b/chrome/browser/history/history_types.h
index 039789c6858039904b9f981c7a7242b6216eb0f2..e0ba22447699c280d7723d8c0b247cfcf5775214 100644
--- a/chrome/browser/history/history_types.h
+++ b/chrome/browser/history/history_types.h
@@ -495,6 +495,21 @@ struct QueryURLResult {
   VisitVector visits;
 };
 
+// QueryRedirectsResult -------------------------------------------------------
+
+// QueryRedirectsResult encapsulates the result of a call to
+// HistoryBackend::QueryRedirects{From,To}.
+struct QueryRedirectsResult {
+  QueryRedirectsResult();
+  ~QueryRedirectsResult();
+
+  // Indicates whether the call to HistoryBackend::QueryRedirects{From,To} was
+  // successfull or not. If false, then |redirects| is undefined.
+  GURL url;
+  bool success;
+  RedirectList redirects;
+};
+
 // KeywordSearchTermVisit -----------------------------------------------------
 
 // KeywordSearchTermVisit is returned from GetMostRecentKeywordSearchTerms. It