Dismiss the system menu if the status area is clicked while the menu is open.

ash/common/system/tray/system_tray.cc

Index: ash/common/system/tray/system_tray.cc
diff --git a/ash/common/system/tray/system_tray.cc b/ash/common/system/tray/system_tray.cc
index b471a79cd70638c73d35de43c0c5c0d0eba675d1..5fcc2cf14d5a75503e8c8c919bcfeb355778c03c 100644
--- a/ash/common/system/tray/system_tray.cc
+++ b/ash/common/system/tray/system_tray.cc
@@ -707,9 +707,10 @@ void SystemTray::ActivateBubble() {
 }
 
 bool SystemTray::PerformAction(const ui::Event& event) {
-  // If we're already showing the default view, hide it; otherwise, show it
-  // (and hide any popup that's currently shown).
-  if (HasSystemBubbleType(SystemTrayBubble::BUBBLE_TYPE_DEFAULT)) {
+  // If we're already showing the menu (whatever default view or detailed view,

[tdanderson, 2017/03/30 19:54:57]

nit: no need to mention the bug number in the comments. You can just reword this
comment as:

"If we're already showing the menu, hide it. Otherwise, show it and hide any
popup that's currently shown."

+  // crbug.com/690112), hide it; otherwise, show it (and hide any popup that's
+  // currently shown).
+  if (system_bubble_.get()) {

[tdanderson, 2017/03/30 19:54:57]

nit: call HasSystemBubble() here instead

     system_bubble_->bubble()->Close();
   } else {
     ShowDefaultView(BUBBLE_CREATE_NEW);