In Chrome ASH on Windows 8 make sure that the browser object is closed before destroying it.

chrome/browser/lifetime/application_lifetime.cc

Index: chrome/browser/lifetime/application_lifetime.cc
===================================================================
--- chrome/browser/lifetime/application_lifetime.cc	(revision 169752)
+++ chrome/browser/lifetime/application_lifetime.cc	(working copy)
@@ -16,6 +16,7 @@
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/browser.h"
+#include "chrome/browser/ui/browser_list_impl.h"
 #include "chrome/browser/ui/browser_tabstrip.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/tab_contents/tab_contents.h"
@@ -206,6 +207,18 @@
   }
 }
 
+void CloseAllBrowsersOfType(chrome::HostDesktopType type) {
+  chrome::BrowserListImpl* ash_browser_list =
+      chrome::BrowserListImpl::GetInstance(type);
+  if (ash_browser_list) {
+    for (chrome::BrowserListImpl::const_iterator i = ash_browser_list->begin();
+            i != ash_browser_list->end(); ++i) {
+      Browser* browser = *i;
+      browser->window()->Close();

[sky, 2012/11/29 01:53:27]

What if the close is vetoed for some reason?

[ananta, 2012/11/29 02:39:41]

I added a comment explaining this. The CloseAllBrowsers function above also
suffers from the same limitation, as were the other examples i found in the code
base. A possible option could be to expose the native CloseNow functionality in
the Widget which forcibly deletes the window. 

Did not deem it necessary for this use case as the actual Browser will be
destroyed anyway subsequently.

+    }
+  }
+}
+
 void AttemptUserExit() {
 #if defined(OS_CHROMEOS)
   chromeos::BootTimesLoader::Get()->AddLogoutTimeMarker("LogoutStarted", false);