Add status area to Aura builds.

chrome/browser/chromeos/status/status_area_button.h

Index: chrome/browser/chromeos/status/status_area_button.h
diff --git a/chrome/browser/chromeos/status/status_area_button.h b/chrome/browser/chromeos/status/status_area_button.h
index e88cbcd04cc3d946a4103eaa509c748ac17eab1d..57661f07c6cb8fa59f44ad509190846fe928d1a8 100644
--- a/chrome/browser/chromeos/status/status_area_button.h
+++ b/chrome/browser/chromeos/status/status_area_button.h
@@ -28,6 +28,13 @@ class StatusAreaButton : public views::MenuButton {
 
   class Delegate {
    public:
+    // Commands to be passed to ExecuteCommand().
+    enum Command {
+      SHOW_LANGUAGE_OPTIONS,
+      SHOW_NETWORK_OPTIONS,
+      SHOW_SYSTEM_OPTIONS
+    };
+
     // |command_id| can be any int, passed from the button to the delegate.
     virtual bool ShouldExecuteStatusAreaCommand(
         const views::View* button_view, int command_id) const = 0;