Move application lifetime functionality off BrowserList.

chrome/browser/lifetime/application_lifetime_win.cc

Index: chrome/browser/lifetime/application_lifetime_win.cc
===================================================================
--- chrome/browser/lifetime/application_lifetime_win.cc	(revision 0)
+++ chrome/browser/lifetime/application_lifetime_win.cc	(working copy)
@@ -2,13 +2,16 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "chrome/browser/ui/browser_list.h"
+#include "chrome/browser/lifetime/application_lifetime.h"
 
 #include "ui/views/widget/widget.h"
 
-// static
-void BrowserList::HandleAppExitingForPlatform() {
+namespace browser {
+
+void HandleAppExitingForPlatform() {
 #if !defined(USE_AURA)
   views::Widget::CloseAllSecondaryWidgets();
 #endif
 }
+
+}  // namespace browser