Do not show notifications when in fullscreen or screensaver mode....

ui/base/x/x11_util.h

Index: ui/base/x/x11_util.h
===================================================================
--- ui/base/x/x11_util.h	(revision 72012)
+++ ui/base/x/x11_util.h	(working copy)
@@ -17,6 +17,7 @@
 
 #include "base/basictypes.h"
 
+typedef unsigned long Atom;
 typedef struct _GdkDrawable GdkWindow;
 typedef struct _GtkWidget GtkWidget;
 typedef struct _GtkWindow GtkWindow;
@@ -76,11 +77,15 @@
 bool IsWindowVisible(XID window);
 // Returns the bounds of |window|.
 bool GetWindowRect(XID window, gfx::Rect* rect);
-// Get the value of an int, int array, or string property.  On
+// Return true if |window| has any property with |property_name|.
+bool ExistsProperty(XID window, const std::string& property_name);

[Daniel Erat, 2011/01/21 01:28:17]

nit: "PropertyExists"

[jianli, 2011/01/21 20:21:00]

Done.

+// Get the value of an int, int array, atom array or string property.  On
 // success, true is returned and the value is stored in |value|.
 bool GetIntProperty(XID window, const std::string& property_name, int* value);
 bool GetIntArrayProperty(XID window, const std::string& property_name,
                          std::vector<int>* value);
+bool GetAtomArrayProperty(XID window, const std::string& property_name,
+                          std::vector<Atom>* value);
 bool GetStringProperty(
     XID window, const std::string& property_name, std::string* value);