Aura: Adds custom cursors for drag and drop.

ui/base/x/x11_util.h

Index: ui/base/x/x11_util.h
diff --git a/ui/base/x/x11_util.h b/ui/base/x/x11_util.h
index 771e8ef3705359fb276788b27601e7f97053c089..bf89c3bd13297a7f77215b8cbef0c59d98470e24 100644
--- a/ui/base/x/x11_util.h
+++ b/ui/base/x/x11_util.h
@@ -18,6 +18,7 @@
 #include "base/basictypes.h"
 #include "ui/base/events.h"
 #include "ui/base/ui_export.h"
+#include "ui/gfx/point.h"
 
 typedef unsigned long Atom;
 typedef unsigned long XID;
@@ -35,6 +36,7 @@ typedef struct _GtkWindow GtkWindow;
 namespace gfx {
 class Rect;
 }
+class SkBitmap;
 
 namespace ui {
 
@@ -89,6 +91,11 @@ UI_EXPORT void RefCustomXCursor(::Cursor cursor);
 
 // Decreases the refcount of the custom cursor, and destroys it if it reaches 0.
 UI_EXPORT void UnrefCustomXCursor(::Cursor cursor);
+
+// Creates a XcursorImage and copies the SkBitmap |bitmap| on it. |bitmap|
+// should be non-null. Caller owns the returned object.
+UI_EXPORT XcursorImage* SkBitmapToXcursorImage(const SkBitmap* bitmap,
+                                               const gfx::Point& hotspot);
 #endif
 
 // These functions do not cache their results --------------------------