Clamp the hotspot on custom cursors to the custom cursor image.

webkit/glue/webcursor.h

Index: webkit/glue/webcursor.h
diff --git a/webkit/glue/webcursor.h b/webkit/glue/webcursor.h
index 293bd744b48a3475e7569077b54d515873903439..35eb001464fd0f5d6116184927a5929ec17393a1 100644
--- a/webkit/glue/webcursor.h
+++ b/webkit/glue/webcursor.h
@@ -127,6 +127,9 @@ class WebCursor {
   void SetCustomData(const WebKit::WebImage& image);
   void ImageFromCustomData(WebKit::WebImage* image) const;
 
+  // Clamp the hotspot to the custom image's bounds, if this is a custom cursor.
+  void ClampHotspot();
+
   // WebCore::PlatformCursor type.
   int type_;