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

ui/views/views.gyp

 # 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.
 {
   'variables': {
     'chromium_code': 1,
     # Sources lists shared with GN build.
     'views_sources': [
       'accessibility/native_view_accessibility.cc',
       'accessibility/native_view_accessibility.h',
@@ skipping 417 matching lines @@
       'widget/desktop_aura/desktop_window_tree_host_x11.cc',
       'widget/desktop_aura/desktop_window_tree_host_x11.h',
       'widget/desktop_aura/desktop_screen_x11.cc',
       'widget/desktop_aura/desktop_screen_x11.h',
       'widget/desktop_aura/x11_desktop_handler.cc',
       'widget/desktop_aura/x11_desktop_handler.h',
       'widget/desktop_aura/x11_desktop_window_move_client.cc',
       'widget/desktop_aura/x11_desktop_window_move_client.h',
       'widget/desktop_aura/x11_move_loop.h',
       'widget/desktop_aura/x11_move_loop_delegate.h',
+      'widget/desktop_aura/x11_pointer_grab.cc',
+      'widget/desktop_aura/x11_pointer_grab.h',
       'widget/desktop_aura/x11_topmost_window_finder.cc',
       'widget/desktop_aura/x11_topmost_window_finder.h',
       'widget/desktop_aura/x11_whole_screen_move_loop.cc',
       'widget/desktop_aura/x11_whole_screen_move_loop.h',
       'widget/desktop_aura/x11_window_event_filter.cc',
       'widget/desktop_aura/x11_window_event_filter.h',
     ],
     'views_desktop_aura_win_sources': [
       'widget/desktop_aura/desktop_cursor_loader_updater_aurawin.cc',
       'widget/desktop_aura/desktop_drag_drop_client_win.cc',
@@ skipping 459 matching lines @@
                 '../aura/aura.gyp:aura',
                 '../wm/wm.gyp:wm',
               ],
             }],
           ],
         },  # target_name: macviews_interactive_ui_tests
       ],  # targets
     }],
   ],  # conditions
 }