Abstract history dependencies on bookmarks through HistoryClient

components/history/core/browser/history_client.cc

Index: components/history/core/browser/history_client.cc
diff --git a/components/history/core/browser/history_client.cc b/components/history/core/browser/history_client.cc
new file mode 100644
index 0000000000000000000000000000000000000000..63dde6c9c74edc1c3188a5f018b61331e608cb86
--- /dev/null
+++ b/components/history/core/browser/history_client.cc
@@ -0,0 +1,22 @@
+// Copyright 2014 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/core/browser/history_client.h"
+
+namespace history {
+
+void HistoryClient::BlockUntilBookmarksLoaded() {
+}
+
+bool HistoryClient::IsBookmarked(const GURL& url) {
+  return false;
+}
+
+void HistoryClient::GetBookmarks(std::vector<URLAndTitle>* bookmarks) {
+}
+
+HistoryClient::HistoryClient() {
+}
+
+}