History UI: Apply the pref that prohibits deleting browsing and download history.

chrome/test/data/webui/history_ui_browsertest.h

+// Copyright 2013 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_TEST_DATA_WEBUI_HISTORY_UI_BROWSERTEST_H_
+#define CHROME_TEST_DATA_WEBUI_HISTORY_UI_BROWSERTEST_H_
+
+#include "chrome/test/base/web_ui_browsertest.h"
+
+class HistoryUIBrowserTest : public WebUIBrowserTest {
+ public:
+  HistoryUIBrowserTest();
+  virtual ~HistoryUIBrowserTest();
+
+ protected:
+  // Sets the pref to allow or prohibit deleting history entries.
+  void SetDeleteAllowed(bool allowed);
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(HistoryUIBrowserTest);
+};
+
+#endif  // CHROME_TEST_DATA_WEBUI_HISTORY_UI_BROWSERTEST_H_