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

chrome/browser/metrics/chrome_browser_main_extra_parts_metrics.cc

 // Copyright (c) 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/metrics/chrome_browser_main_extra_parts_metrics.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 33 matching lines @@
 #include "ui/base/x/x11_util.h"
 #endif
 #endif  // defined(OS_LINUX) && !defined(OS_CHROMEOS)
 
 #if defined(USE_OZONE) || defined(USE_X11)
 #include "ui/events/devices/device_data_manager.h"
 #include "ui/events/devices/input_device_event_observer.h"
 #endif  // defined(USE_OZONE) || defined(USE_X11)
 
 #if defined(OS_WIN)
+#include "base/win/windows_version.h"
 #include "chrome/installer/util/google_update_settings.h"
 #endif  // defined(OS_WIN)
 
 namespace {
 
 enum UMALinuxGlibcVersion {
   UMA_LINUX_GLIBC_NOT_PARSEABLE,
   UMA_LINUX_GLIBC_UNKNOWN,
   UMA_LINUX_GLIBC_2_11,
   // To log newer versions, just update tools/metrics/histograms/histograms.xml.
@@ skipping 69 matching lines @@
 #endif  // defined(OS_ANDROID) && defined(__arm__)
   UMA_HISTOGRAM_SPARSE_SLOWLY("Platform.LogicalCpuCount",
                               base::SysInfo::NumberOfProcessors());
 }
 
 // Called on the blocking pool some time after startup to avoid slowing down
 // startup with metrics that aren't trivial to compute.
 void RecordStartupMetricsOnBlockingPool() {
 #if defined(OS_WIN)
   GoogleUpdateSettings::RecordChromeUpdatePolicyHistograms();
+
+  const base::win::OSInfo& os_info = *base::win::OSInfo::GetInstance();
+  UMA_HISTOGRAM_ENUMERATION("Windows.GetVersionExVersion", os_info.version(),
+                            base::win::VERSION_WIN_LAST);
+  UMA_HISTOGRAM_ENUMERATION("Windows.Kernel32Version",
+                            os_info.Kernel32Version(),
+                            base::win::VERSION_WIN_LAST);
+  UMA_HISTOGRAM_BOOLEAN("Windows.InCompatibilityMode",
+                        os_info.version() != os_info.Kernel32Version());
 #endif  // defined(OS_WIN)
 
 #if defined(OS_MACOSX)
   bluetooth_utility::BluetoothAvailability availability =
       bluetooth_utility::GetBluetoothAvailability();
   UMA_HISTOGRAM_ENUMERATION("OSX.BluetoothAvailability",
                             availability,
                             bluetooth_utility::BLUETOOTH_AVAILABILITY_COUNT);
 #endif   // defined(OS_MACOSX)
 
@@ skipping 225 matching lines @@
   }
 }
 
 namespace chrome {
 
 void AddMetricsExtraParts(ChromeBrowserMainParts* main_parts) {
   main_parts->AddParts(new ChromeBrowserMainExtraPartsMetrics());
 }
 
 }  // namespace chrome