Delete the GTK+ port of Chrome.

ui/gfx/gfx.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
@@ skipping 107 matching lines @@
         'animation/throb_animation.cc',
         'animation/throb_animation.h',
         'animation/tween.cc',
         'animation/tween.h',
         'blit.cc',
         'blit.h',
         'break_list.h',
         'canvas.cc',
         'canvas.h',
         'canvas_android.cc',
-        'canvas_paint_gtk.cc',
-        'canvas_paint_gtk.h',
         'canvas_paint_mac.h',
         'canvas_paint_mac.mm',
         'canvas_paint_win.cc',
         'canvas_paint_win.h',
         'canvas_skia.cc',
         'canvas_skia_paint.h',
         'codec/jpeg_codec.cc',
         'codec/jpeg_codec.h',
         'codec/png_codec.cc',
         'codec/png_codec.h',
@@ skipping 81 matching lines @@
         'ozone/surface_factory_ozone.h',
         'ozone/surface_ozone_egl.h',
         'ozone/surface_ozone_canvas.h',
         'ozone/overlay_candidates_ozone.cc',
         'ozone/overlay_candidates_ozone.h',
         'pango_util.cc',
         'pango_util.h',
         'path.cc',
         'path.h',
         'path_aura.cc',
-        'path_gtk.cc',
         'path_win.cc',
         'path_win.h',
         'path_x11.cc',
         'path_x11.h',
         'platform_font.h',
         'platform_font_android.cc',
         'platform_font_ios.h',
         'platform_font_ios.mm',
         'platform_font_mac.h',
         'platform_font_mac.mm',
@@ skipping 18 matching lines @@
         'scoped_canvas.h',
         'scoped_cg_context_save_gstate_mac.h',
         'scoped_ns_graphics_context_save_gstate_mac.h',
         'scoped_ns_graphics_context_save_gstate_mac.mm',
         'scoped_ui_graphics_push_context_ios.h',
         'scoped_ui_graphics_push_context_ios.mm',
         'screen.cc',
         'screen.h',
         'screen_android.cc',
         'screen_aura.cc',
-        'screen_gtk.cc',
         'screen_ios.mm',
         'screen_mac.mm',
         'screen_win.cc',
         'screen_win.h',
         'scrollbar_size.cc',
         'scrollbar_size.h',
         'selection_model.cc',
         'selection_model.h',
         'sequential_id_generator.cc',
         'sequential_id_generator.h',
         'shadow_value.cc',
         'shadow_value.h',
         'skbitmap_operations.cc',
         'skbitmap_operations.h',
         'skia_util.cc',
         'skia_util.h',
-        'skia_utils_gtk.cc',
-        'skia_utils_gtk.h',
         'switches.cc',
         'switches.h',
         'sys_color_change_listener.cc',
         'sys_color_change_listener.h',
         'text_constants.h',
         'text_elider.cc',
         'text_elider.h',
         'text_utils.cc',
         'text_utils.h',
         'text_utils_android.cc',
@@ skipping 254 matching lines @@
           ],
           'variables': {
             'test_suite_name': 'gfx_unittests',
           },
           'includes': [ '../../build/apk_test.gypi' ],
         },
       ],
     }],
   ],
 }