Don't show system notifications while the screen is locked.

chrome/browser/chromeos/notifications/system_notification.h

Index: chrome/browser/chromeos/notifications/system_notification.h
diff --git a/chrome/browser/chromeos/notifications/system_notification.h b/chrome/browser/chromeos/notifications/system_notification.h
index ff9275a0e3bd631d7500474290d80accde345302..aacca0d649893552a1f1f13bd08c4c33490be5b0 100644
--- a/chrome/browser/chromeos/notifications/system_notification.h
+++ b/chrome/browser/chromeos/notifications/system_notification.h
@@ -13,8 +13,10 @@
 #include "base/string16.h"
 #include "chrome/browser/chromeos/notifications/balloon_view_host_chromeos.h"  // MessageCallback
 #include "chrome/browser/notifications/notification_delegate.h"
+#include "chromeos/dbus/power_manager_client.h"
 #include "googleurl/src/gurl.h"
 
+class Notification;
 class Profile;
 
 namespace chromeos {
@@ -24,7 +26,7 @@ typedef class BalloonCollectionImplAura BalloonCollectionImplType;
 
 // The system notification object handles the display of a system notification
 
-class SystemNotification {
+class SystemNotification : public PowerManagerClient::Observer {
  public:
   // The profile is the current user profile. The id is any string used
   // to uniquely identify this notification. The title is the title of
@@ -42,6 +44,9 @@ class SystemNotification {
 
   virtual ~SystemNotification();
 
+  // PowerManagerClient::Observer override.
+  virtual void UnlockScreen() OVERRIDE;
+
   void set_title(const string16& title) { title_ = title; }
 
   // Show will show or update the message for this notification
@@ -82,14 +87,20 @@ class SystemNotification {
   };
 
   void Init(int icon_resource_id);
+  void ShowNotification(const Notification& notify);
 
   Profile* profile_;
   BalloonCollectionImplType* collection_;
   scoped_refptr<NotificationDelegate> delegate_;
+  string16 message_;
+  string16 link_;
+  BalloonViewHost::MessageCallback callback_;
   GURL icon_;
   string16 title_;
   bool visible_;
+  bool sticky_;
   bool urgent_;
+  bool show_on_unlock_;
 
   DISALLOW_COPY_AND_ASSIGN(SystemNotification);
 };