Process WM_ENDSESSION in the traybar icon window.

chrome/browser/ui/views/status_icons/status_tray_win.cc

 // Copyright (c) 2012 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/ui/views/status_icons/status_tray_win.h"
 
 #include <commctrl.h>
 
 #include "base/bind.h"
 #include "base/profiler/scoped_tracker.h"
 #include "base/threading/non_thread_safe.h"
 #include "base/threading/thread.h"
 #include "base/win/wrapped_window_proc.h"
+#include "chrome/browser/lifetime/application_lifetime.h"
 #include "chrome/browser/ui/views/status_icons/status_icon_win.h"
 #include "chrome/browser/ui/views/status_icons/status_tray_state_changer_win.h"
 #include "chrome/common/chrome_constants.h"
+#include "components/browser_watcher/exit_funnel_win.h"
 #include "ui/gfx/screen.h"
 #include "ui/gfx/win/hwnd_util.h"
 
 static const UINT kStatusIconMessage = WM_APP + 1;
 
 namespace {
 // |kBaseIconId| is 2 to avoid conflicts with plugins that hard-code id 1.
 const UINT kBaseIconId = 2;
 
 UINT ReservedIconId(StatusTray::StatusIconType type) {
   return kBaseIconId + static_cast<UINT>(type);
 }
+
+// See http://crbug.com/412384.
+void TraceSessionEnding(LPARAM lparam) {
+  browser_watcher::ExitFunnel funnel;
+  if (!funnel.Init(chrome::kBrowserExitCodesRegistryPath,
+                   base::GetCurrentProcessHandle())) {
+    return;
+  }
+
+  // This exit path is the prime suspect for most our unclean shutdowns.
+  // Trace all the possible options to WM_ENDSESSION. This may result in
+  // multiple events for a single shutdown, but that's fine.
+  funnel.RecordEvent(L"TraybarEndSession");
+
+  if (lparam & ENDSESSION_CLOSEAPP)
+    funnel.RecordEvent(L"ES_CloseApp");
+  if (lparam & ENDSESSION_CRITICAL)
+    funnel.RecordEvent(L"ES_Critical");
+  if (lparam & ENDSESSION_LOGOFF)
+    funnel.RecordEvent(L"ES_Logoff");
+  const LPARAM kKnownBits =
+      ENDSESSION_CLOSEAPP | ENDSESSION_CRITICAL | ENDSESSION_LOGOFF;
+  if (lparam & ~kKnownBits)
+    funnel.RecordEvent(L"ES_Other");
+}
+
 }  // namespace
 
 // Default implementation for StatusTrayStateChanger that communicates to
 // Exporer.exe via COM.  It spawns a background thread with a fresh COM
 // apartment and requests that the visibility be increased unless the user
 // has explicitly set the icon to be hidden.
 class StatusTrayStateChangerProxyImpl : public StatusTrayStateChangerProxy,
                                         public base::NonThreadSafe {
  public:
   StatusTrayStateChangerProxyImpl()
@@ skipping 152 matching lines @@
       case WM_LBUTTONDOWN:
       case WM_RBUTTONDOWN:
       case WM_CONTEXTMENU:
         // Walk our icons, find which one was clicked on, and invoke its
         // HandleClickEvent() method.
         gfx::Point cursor_pos(
             gfx::Screen::GetNativeScreen()->GetCursorScreenPoint());
         win_icon->HandleClickEvent(cursor_pos, lparam == WM_LBUTTONDOWN);
         return TRUE;
     }
+  } else if (message == WM_ENDSESSION) {
+    // If chrome is in background-only mode, this is the only notification

[Will Harris, 2015/01/29 21:56:02]

nit: Chrome

[Sigurður Ásgeirsson, 2015/01/30 13:52:12]

Done.

+    // it gets that Windows is exiting. Make sure we shutdown in an orderly
+    // fashion.
+    TraceSessionEnding(lparam);
+    chrome::SessionEnding();
   }
   return ::DefWindowProc(hwnd, message, wparam, lparam);
 }
 
 StatusIcon* StatusTrayWin::CreatePlatformStatusIcon(
     StatusTray::StatusIconType type,
     const gfx::ImageSkia& image,
     const base::string16& tool_tip) {
   UINT next_icon_id;
   if (type == StatusTray::OTHER_ICON)
@@ skipping 15 matching lines @@
 }
 
 void StatusTrayWin::SetStatusTrayStateChangerProxyForTest(
     scoped_ptr<StatusTrayStateChangerProxy> proxy) {
   state_changer_proxy_ = proxy.Pass();
 }
 
 StatusTray* StatusTray::Create() {
   return new StatusTrayWin();
 }