GTK: Cache our GdkCursor objects, since building them hits the disk.

chrome/common/gtk_util.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_COMMON_GTK_UTIL_H_
 #define CHROME_COMMON_GTK_UTIL_H_
 
 #include <gtk/gtk.h>
 #include <string>
 #include <vector>
@@ skipping 153 matching lines @@
 // |offscreen_entry| onto |widget_to_draw_on| in the rectangle |rec|. Drawing
 // is only done in the clip rectangle |dirty_rec|.
 void DrawTextEntryBackground(GtkWidget* offscreen_entry,
                              GtkWidget* widget_to_draw_on,
                              GdkRectangle* dirty_rec,
                              GdkRectangle* rec);
 
 // Returns the two colors averaged together.
 GdkColor AverageColors(GdkColor color_one, GdkColor color_two);
 
+// Returns a static instance of a GdkCursor* object, sharable across the
+// process.  Returns a GdkCursor with a +1 refcount, as if it was just created
+// with gdk_cursor_new(); owner must gdk_cursor_unref() it when done with it.
+GdkCursor* GetCursor(GdkCursorType type);
+
 }  // namespace gtk_util
 
 #endif  // CHROME_COMMON_GTK_UTIL_H_