Inject CanAddURLToHistory into TopSitesImpl

components/history/ios/browser/history_database_helper.cc

Index: components/history/ios/browser/history_database_helper.cc
diff --git a/components/history/ios/browser/history_database_helper.cc b/components/history/ios/browser/history_database_helper.cc
new file mode 100644
index 0000000000000000000000000000000000000000..6f2f22e01d87f60bd15ee68cebd3df8143985ecd
--- /dev/null
+++ b/components/history/ios/browser/history_database_helper.cc
@@ -0,0 +1,34 @@
+// Copyright 2015 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 "components/history/ios/browser/history_database_helper.h"
+
+#include "base/files/file_path.h"
+#include "components/history/core/browser/history_database_params.h"
+
+namespace history {
+namespace {
+
+// Values are copied from content/public/browser/download_interrupt_reasons.h.
+// Their value is irrelevant for iOS but must be kept in sync until iOS code
+// downstream stops compiling some part of content.
+
+// The download successfully completed.
+const DownloadInterruptReason kDownloadInterruptReasonNone = 0;
+
+// The download was interrupted by a browser crash.
+// Resume pending downloads if possible.
+const DownloadInterruptReason kDownloadInterruptReasonCrash = 50;
+
+}  // namespace
+
+HistoryDatabaseParams HistoryDatabaseParamsForPath(
+    const base::FilePath& history_dir) {
+  return HistoryDatabaseParams(
+      history_dir,
+      kDownloadInterruptReasonNone,
+      kDownloadInterruptReasonCrash);
+}
+
+}  // namespace