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 a03d2ff900caf4c01d3a0c88e92e15683e434b9c..a3fc82548a1a1d4a11d24160e7db705c38cd6eae 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);
 }