aura-x11: Add custom web cursor support.

ui/aura/root_window.h

 // Copyright (c) 2012 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 UI_AURA_ROOT_WINDOW_H_
 #define UI_AURA_ROOT_WINDOW_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 65 matching lines @@
   // Shows the root window host.
   void ShowRootWindow();
 
   // Sets the size of the root window.
   void SetHostSize(const gfx::Size& size);
   gfx::Size GetHostSize() const;
 
   // Sets the currently-displayed cursor. If the cursor was previously hidden
   // via ShowCursor(false), it will remain hidden until ShowCursor(true) is
   // called, at which point the cursor that was last set via SetCursor() will be
-  // used.
+  // used. To set a custom cursor, use SetCustomCursor instead.
   void SetCursor(gfx::NativeCursor cursor);
 
+  // Sets a custom cursor for the display. This interacts with ShowCursor the
+  // same as SetCursor (see above).
+  void SetCustomCursor(const gfx::PlatformCursor& cursor);
+
   // Shows or hides the cursor.
   void ShowCursor(bool show);
 
   // Moves the cursor to the specified location relative to the root window.
   void MoveCursorTo(const gfx::Point& location);
 
   // Clips the cursor movement to |capture_window_|. Should be invoked only
   // after SetCapture(). ReleaseCapture() implicitly removes any confines set
   // using this function. Returns true if successful.
   bool ConfineCursorToWindow();
@@ skipping 212 matching lines @@
   scoped_ptr<GestureRecognizer> gesture_recognizer_;
 
   bool synthesize_mouse_move_;
 
   DISALLOW_COPY_AND_ASSIGN(RootWindow);
 };
 
 }  // namespace aura
 
 #endif  // UI_AURA_ROOT_WINDOW_H_