Set up Finch trial for malware download warnings

chrome/browser/download/download_util_unittest.cc

+// 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.
+
+#include "chrome/browser/download/download_util.h"
+
+#include "base/strings/string16.h"
+#include "base/strings/utf_string_conversions.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+TEST(DownloadUtilTest, FinchStrings) {
+  EXPECT_EQ(
+      ASCIIToUTF16("This file is malicious."),
+      download_util::AssembleMalwareFinchString(
+          download_util::kCondition3Malicious, string16()));
+  EXPECT_EQ(
+      ASCIIToUTF16("File 'malware.exe' is malicious."),
+      download_util::AssembleMalwareFinchString(
+          download_util::kCondition3Malicious, ASCIIToUTF16("malware.exe")));
+}