Use XGrabPointer instead of XChangeActivatePointerGrab() to change the cursor during a pointer grab

ui/views/widget/desktop_aura/x11_whole_screen_move_loop.h

 // Copyright (c) 2013 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_VIEWS_WIDGET_DESKTOP_AURA_X11_WHOLE_SCREEN_MOVE_LOOP_H_
 #define UI_VIEWS_WIDGET_DESKTOP_AURA_X11_WHOLE_SCREEN_MOVE_LOOP_H_
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 25 matching lines @@
                                public ui::PlatformEventDispatcher {
  public:
   explicit X11WholeScreenMoveLoop(X11MoveLoopDelegate* delegate);
   ~X11WholeScreenMoveLoop() override;
 
   // ui:::PlatformEventDispatcher:
   bool CanDispatchEvent(const ui::PlatformEvent& event) override;
   uint32_t DispatchEvent(const ui::PlatformEvent& event) override;
 
   // X11MoveLoop:
-  bool RunMoveLoop(aura::Window* window, gfx::NativeCursor cursor) override;
+  bool RunMoveLoop(aura::Window* window) override;
   void UpdateCursor(gfx::NativeCursor cursor) override;
   void EndMoveLoop() override;
 
  private:
-  // Grabs the pointer, setting the mouse cursor to |cursor|. Returns true if
-  // successful.
-  bool GrabPointer(gfx::NativeCursor cursor);
+  // Grabs the pointer on |grab_input_window_|. Returns true if successful.
+  bool GrabPointer();
 
   void GrabEscKey();
 
   // Creates an input-only window to be used during the drag.
   XID CreateDragInputWindow(XDisplay* display);
 
   // Dispatch mouse movement event to |delegate_| in a posted task.
   void DispatchMouseMovement();
 
   X11MoveLoopDelegate* delegate_;
 
   // Are we running a nested message loop from RunMoveLoop()?
   bool in_move_loop_;
   scoped_ptr<ui::ScopedEventDispatcher> nested_dispatcher_;
 
-  // Cursor in use prior to the move loop starting. Restored when the move loop
-  // quits.
-  gfx::NativeCursor initial_cursor_;
-
   bool should_reset_mouse_flags_;
 
   // An invisible InputOnly window. Keyboard grab and sometimes mouse grab
   // are set on this window.
   XID grab_input_window_;
 
   // Whether the pointer was grabbed on |grab_input_window_|.
   bool grabbed_pointer_;
 
   base::Closure quit_closure_;
 
   // Keeps track of whether the move-loop is cancled by the user (e.g. by
   // pressing escape).
   bool canceled_;
 
   scoped_ptr<ui::MouseEvent> last_motion_in_screen_;
   base::WeakPtrFactory<X11WholeScreenMoveLoop> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(X11WholeScreenMoveLoop);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_DESKTOP_AURA_X11_WHOLE_SCREEN_MOVE_LOOP_H_