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

ui/base/x/x11_util.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_BASE_X_X11_UTIL_H_
 #define UI_BASE_X_X11_UTIL_H_
 #pragma once
 
 // This file declares utility functions for X11 (Linux only).
 //
 // These functions do not require the Xlib headers to be included (which is why
 // we use a void* for Visual*). The Xlib headers are highly polluting so we try
 // hard to limit their spread into the rest of the code.
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 
+typedef unsigned long Atom;
 typedef struct _GdkDrawable GdkWindow;
 typedef struct _GtkWidget GtkWidget;
 typedef struct _GtkWindow GtkWindow;
 typedef unsigned long XID;
 typedef unsigned long XSharedMemoryId;  // ShmSeg in the X headers.
 typedef struct _XDisplay Display;
 
 namespace gfx {
 class Rect;
 }
@@ skipping 39 matching lines @@
 XID GetX11WindowFromGdkWindow(GdkWindow* window);
 // Get a Visual from the given widget. Since we don't include the Xlib
 // headers, this is returned as a void*.
 void* GetVisualFromGtkWidget(GtkWidget* widget);
 // Return the number of bits-per-pixel for a pixmap of the given depth
 int BitsPerPixelForPixmapDepth(Display* display, int depth);
 // Returns true if |window| is visible.
 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);
 
 // Get |window|'s parent window, or None if |window| is the root window.
 XID GetParentWindow(XID window);
 
 // Walk up |window|'s hierarchy until we find a direct child of |root|.
 XID GetHighestAncestorWindow(XID window, XID root);
 
 static const int kAllDesktops = -1;
@@ skipping 80 matching lines @@
 bool ChangeWindowDesktop(XID window, XID destination);
 
 // Enable the default X error handlers. These will log the error and abort
 // the process if called. Use SetX11ErrorHandlers() from x11_util_internal.h
 // to set your own error handlers.
 void SetDefaultX11ErrorHandlers();
 
 }  // namespace ui
 
 #endif  // UI_BASE_X_X11_UTIL_H_