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

chrome/common/gtk_util.h

Index: chrome/common/gtk_util.h
diff --git a/chrome/common/gtk_util.h b/chrome/common/gtk_util.h
index c12fe98cbd31d7e5f1d5cb646cf2ee2ef7f1b2ab..ada8a2a246483bc351730b7e5070317683de44df 100644
--- a/chrome/common/gtk_util.h
+++ b/chrome/common/gtk_util.h
@@ -171,6 +171,11 @@ void DrawTextEntryBackground(GtkWidget* offscreen_entry,
 // 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_