Move TooltipWindowGtk from views/widget to ui/base/gtk.

views/views.gyp

 # Copyright (c) 2011 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,
   },
 
   'target_defaults': {
@@ skipping 327 matching lines @@
         'widget/root_view.cc',
         'widget/root_view.h',
         'widget/tooltip_manager_gtk.cc',
         'widget/tooltip_manager_gtk.h',
         'widget/tooltip_manager_views.cc',
         'widget/tooltip_manager_views.h',
         'widget/tooltip_manager_win.cc',
         'widget/tooltip_manager_win.h',
         'widget/tooltip_manager.cc',
         'widget/tooltip_manager.h',
-        'widget/tooltip_window_gtk.cc',
-        'widget/tooltip_window_gtk.h',
         'widget/monitor_win.cc',
         'widget/monitor_win.h',
         'widget/native_widget.h',
         'widget/native_widget_aura.cc',
         'widget/native_widget_aura.h',
         'widget/native_widget_delegate.h',
         'widget/native_widget_private.h',
         'widget/native_widget_gtk.cc',
         'widget/native_widget_gtk.h',
         'widget/native_widget_view.cc',
@@ skipping 457 matching lines @@
               'include_dirs': [
                 '<(DEPTH)/third_party/wtl/include',
               ],
             }],
           ],
         },
       ],
     }],      
   ],
 }