gtk: Hide the status bubble when the mouse nears it.

chrome/browser/gtk/rounded_window.h

 // Copyright (c) 2009 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 CHROME_BROWSER_GTK_ROUNDED_WINDOW_H_
 #define CHROME_BROWSER_GTK_ROUNDED_WINDOW_H_
 
 #include <gtk/gtk.h>
 
 namespace gtk_util {
@@ skipping 21 matching lines @@
 // Sets up the passed in widget that has its own GdkWindow with an expose
 // handler that forces the window shape into roundness. Caller should not set
 // an "expose-event" handler on |widget|; if caller needs to do custom
 // rendering, use SetRoundedWindowExposeFunction() instead. |rounded_edges|
 // control which corners are rounded. |drawn_borders| border control which
 // sides have a visible border drawn in |color|.
 void ActAsRoundedWindow(
     GtkWidget* widget, const GdkColor& color, int corner_size,
     int rounded_edges, int drawn_borders);
 
-// Undo most of the actions of ActAsRoundedWindow.
+// Undoes most of the actions of ActAsRoundedWindow().
 void StopActingAsRoundedWindow(GtkWidget* widget);
 
-// Sets the color of the border on a widget that was returned from
-// ActAsRoundedWindow().
+// Sets edge and border properties on a widget that has already been configured
+// with ActAsRoundedWindow().
+void SetRoundedWindowEdgesAndBorders(GtkWidget* widget,
+                                     int corner_size,
+                                     int rounded_edges,
+                                     int drawn_borders);
+
+// Sets the color of the border on a widget that has already been configured
+// with ActAsRoundedWindow().
 void SetRoundedWindowBorderColor(GtkWidget* widget, GdkColor color);
 
+
 }  // namespace gtk_util
 
 #endif  // CHROME_BROWSER_GTK_ROUNDED_WINDOW_H_