Add UMA stat to track usage of Chrome for Linux accross different window managers

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 11 matching lines @@
 #include "chrome/browser/shell_integration.h"
 #include "content/public/browser/browser_thread.h"
 #include "ui/base/touch/touch_device.h"
 #include "ui/base/ui_base_switches.h"
 #include "ui/events/event_switches.h"
 
 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
 #include <gnu/libc-version.h>
 
 #include "base/version.h"
+#include "ui/base/x/x11_util.h"
 #endif  // defined(OS_LINUX) && !defined(OS_CHROMEOS)
 
 #if defined(OS_WIN)
 #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,
   UMA_LINUX_GLIBC_2_19 = UMA_LINUX_GLIBC_2_11 + 8,
   // NOTE: Add new version above this line and update the enum list in
-  // tools/histograms/histograms.xml accordingly.
+  // tools/metrics/histograms/histograms.xml accordingly.
   UMA_LINUX_GLIBC_VERSION_COUNT
 };
 
+enum UMALinuxWindowManager {
+  UMA_LINUX_WINDOW_MANAGER_OTHER,
+  UMA_LINUX_WINDOW_MANAGER_BLACKBOX,
+  UMA_LINUX_WINDOW_MANAGER_CHROME_OS,
+  UMA_LINUX_WINDOW_MANAGER_COMPIZ,
+  UMA_LINUX_WINDOW_MANAGER_ENLIGHTENMENT,
+  UMA_LINUX_WINDOW_MANAGER_ICE_WM,
+  UMA_LINUX_WINDOW_MANAGER_KWIN,
+  UMA_LINUX_WINDOW_MANAGER_METACITY,
+  UMA_LINUX_WINDOW_MANAGER_MUFFIN,
+  UMA_LINUX_WINDOW_MANAGER_MUTTER,
+  UMA_LINUX_WINDOW_MANAGER_OPENBOX,
+  UMA_LINUX_WINDOW_MANAGER_XFWM4,
+  // NOTE: Add new window managers above this line and update the enum list in
+  // tools/metrics/histograms/histograms.xml accordingly.
+  UMA_LINUX_WINDOW_MANAGER_COUNT
+};
+
 enum UMATouchEventsState {
   UMA_TOUCH_EVENTS_ENABLED,
   UMA_TOUCH_EVENTS_AUTO_ENABLED,
   UMA_TOUCH_EVENTS_AUTO_DISABLED,
   UMA_TOUCH_EVENTS_DISABLED,
   // NOTE: Add states only immediately above this line. Make sure to
-  // update the enum list in tools/histograms/histograms.xml accordingly.
+  // update the enum list in tools/metrics/histograms/histograms.xml
+  // accordingly.
   UMA_TOUCH_EVENTS_STATE_COUNT
 };
 
 void RecordMicroArchitectureStats() {
 #if defined(ARCH_CPU_X86_FAMILY)
   base::CPU cpu;
   base::CPU::IntelMicroArchitecture arch = cpu.GetIntelMicroArchitecture();
   UMA_HISTOGRAM_ENUMERATION("Platform.IntelMaxMicroArchitecture", arch,
                             base::CPU::MAX_INTEL_MICRO_ARCHITECTURE);
 #endif  // defined(ARCH_CPU_X86_FAMILY)
@@ skipping 29 matching lines @@
         glibc_version_result =
             static_cast<UMALinuxGlibcVersion>(translated_glibc_minor_version);
       }
     }
   }
   UMA_HISTOGRAM_ENUMERATION("Linux.GlibcVersion", glibc_version_result,
                             UMA_LINUX_GLIBC_VERSION_COUNT);
 #endif
 }
 
+void RecordLinuxWindowManager() {
+#if defined(OS_LINUX) && !defined(OS_CHROMEOS)
+  ui::WindowManagerName name = ui::GuessWindowManager();
+  UMALinuxWindowManager uma_name = UMA_LINUX_WINDOW_MANAGER_OTHER;
+  switch (name) {
+    case ui::WM_UNKNOWN:
+      uma_name = UMA_LINUX_WINDOW_MANAGER_OTHER;
+      break;
+    case ui::WM_BLACKBOX:
+      uma_name = UMA_LINUX_WINDOW_MANAGER_BLACKBOX;
+      break;
+    case ui::WM_CHROME_OS:
+      uma_name = UMA_LINUX_WINDOW_MANAGER_CHROME_OS;
+      break;
+    case ui::WM_COMPIZ:
+      uma_name = UMA_LINUX_WINDOW_MANAGER_COMPIZ;
+      break;
+    case ui::WM_ENLIGHTENMENT:
+      uma_name = UMA_LINUX_WINDOW_MANAGER_ENLIGHTENMENT;
+      break;
+    case ui::WM_ICE_WM:
+      uma_name = UMA_LINUX_WINDOW_MANAGER_ICE_WM;
+      break;
+    case ui::WM_KWIN:
+      uma_name = UMA_LINUX_WINDOW_MANAGER_KWIN;
+      break;
+    case ui::WM_METACITY:
+      uma_name = UMA_LINUX_WINDOW_MANAGER_METACITY;
+      break;
+    case ui::WM_MUFFIN:
+      uma_name = UMA_LINUX_WINDOW_MANAGER_MUFFIN;
+      break;
+    case ui::WM_MUTTER:
+      uma_name = UMA_LINUX_WINDOW_MANAGER_MUTTER;
+      break;
+    case ui::WM_OPENBOX:
+      uma_name = UMA_LINUX_WINDOW_MANAGER_OPENBOX;
+      break;
+    case ui::WM_XFWM4:
+      uma_name = UMA_LINUX_WINDOW_MANAGER_XFWM4;
+      break;
+  }
+  UMA_HISTOGRAM_ENUMERATION("Linux.WindowManager", uma_name,
+                            UMA_LINUX_WINDOW_MANAGER_COUNT);
+#endif
+}
+
 void RecordTouchEventState() {
   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
   const std::string touch_enabled_switch =
       command_line.HasSwitch(switches::kTouchEvents) ?
       command_line.GetSwitchValueASCII(switches::kTouchEvents) :
       switches::kTouchEventsAuto;
 
   UMATouchEventsState state;
   if (touch_enabled_switch.empty() ||
       touch_enabled_switch == switches::kTouchEventsEnabled) {
@@ skipping 25 matching lines @@
 }
 
 void ChromeBrowserMainExtraPartsMetrics::PreBrowserStart() {
   about_flags::PrefServiceFlagsStorage flags_storage_(
       g_browser_process->local_state());
   about_flags::RecordUMAStatistics(&flags_storage_);
 }
 
 void ChromeBrowserMainExtraPartsMetrics::PostBrowserStart() {
   RecordLinuxGlibcVersion();
+  RecordLinuxWindowManager();
   RecordTouchEventState();
 
   const int kStartupMetricsGatheringDelaySeconds = 45;
   content::BrowserThread::GetBlockingPool()->PostDelayedTask(
       FROM_HERE,
       base::Bind(&RecordStartupMetricsOnBlockingPool),
       base::TimeDelta::FromSeconds(kStartupMetricsGatheringDelaySeconds));
 
   // Create the metrics log observer.
   // We only need this for Android for now.
 #if defined(ANDROID)
   metrics_service_observer_.reset(new ChromeBrowserMetricsServiceObserver());
 #endif
 }
 
 namespace chrome {
 
 void AddMetricsExtraParts(ChromeBrowserMainParts* main_parts) {
   main_parts->AddParts(new ChromeBrowserMainExtraPartsMetrics());
 }
 
 }  // namespace chrome