Show camera and microphone status indicators.

chrome/browser/status_icons/desktop_notification_balloon.cc

Index: chrome/browser/status_icons/desktop_notification_balloon.cc
diff --git a/chrome/browser/status_icons/desktop_notification_balloon.cc b/chrome/browser/status_icons/desktop_notification_balloon.cc
index a0361d4eb66cfd1fd40cb314fa0ce07a41fccf2f..fe0c4787b97a05c5182768a90a7056a02a00d4a1 100644
--- a/chrome/browser/status_icons/desktop_notification_balloon.cc
+++ b/chrome/browser/status_icons/desktop_notification_balloon.cc
@@ -19,6 +19,11 @@
 namespace {
 
 void CloseBalloon(const std::string& id) {
+  // The browser process may have gone away during shutting down, in this case
+  // notification_ui_manager() will close the balloon in its destructor.
+  if (!g_browser_process)
+    return;
+
   g_browser_process->notification_ui_manager()->CancelById(id);
 }