Add histograms to compare GetVersionEx() with VerQueryValue() of kernel32

base/win/windows_version_unittest.cc

Index: base/win/windows_version_unittest.cc
diff --git a/base/win/windows_version_unittest.cc b/base/win/windows_version_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..f0d6d9660d70f6ea238670ce5f2b41a3727e72f8
--- /dev/null
+++ b/base/win/windows_version_unittest.cc
@@ -0,0 +1,22 @@
+// Copyright 2016 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 "base/win/windows_version.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace base {
+namespace win {
+namespace {
+
+TEST(WindowsVersion, GetVersionExAndKernelVersionMatch) {
+  // If this fails, we're running in compatibility mode, or need to update the
+  // application manifest.
+  EXPECT_EQ(OSInfo::GetInstance()->version(),
+            OSInfo::GetInstance()->Kernel32Version());
+}
+
+}  // namespace
+}  // namespace win
+}  // namespace base