Collect some histograms about signed binary downloads.

chrome/browser/safe_browsing/signature_util_win_unittest.cc

+// Copyright (c) 2011 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/safe_browsing/signature_util.h"
+
+#include "base/base_paths.h"
+#include "base/file_path.h"
+#include "base/path_service.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace safe_browsing {
+
+TEST(SignatureUtilWinTest, IsSigned) {
+  FilePath source_path;
+  ASSERT_TRUE(PathService::Get(base::DIR_SOURCE_ROOT, &source_path));
+
+  FilePath testdata_path = source_path
+      .AppendASCII("chrome")
+      .AppendASCII("test")
+      .AppendASCII("data")
+      .AppendASCII("safe_browsing")
+      .AppendASCII("download_protection");
+
+  EXPECT_TRUE(signature_util::IsSigned(testdata_path.Append(L"signed.exe")));
+  EXPECT_FALSE(signature_util::IsSigned(
+      testdata_path.Append(L"unsigned.exe")));
+  EXPECT_FALSE(signature_util::IsSigned(
+      testdata_path.Append(L"doesnotexist.exe")));
+}
+
+}  // namespace safe_browsing