GTK: Move CairoCachedSurface from being owned by GtkThemeService to gfx::Image.

ui/ui.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,
   },
   'includes': [
     'ui_resources.gypi',
@@ skipping 401 matching lines @@
           'dependencies': [
             '../build/linux/system.gyp:gtk',
           ],
           'sources': [
             'gfx/gtk_native_view_id_manager.cc',
             'gfx/gtk_native_view_id_manager.h',
             'gfx/gtk_preserve_window.cc',
             'gfx/gtk_preserve_window.h',
             'gfx/gtk_util.cc',
             'gfx/gtk_util.h',
+            'gfx/image/cairo_cached_surface.cc',
+            'gfx/image/cairo_cached_surface.h',
           ],
         }, {  # toolkit_uses_gtk != 1
           'sources!': [
             'gfx/native_theme_gtk.cc',
             'gfx/native_theme_gtk.h',
           ]
         }],
         ['use_wayland == 1', {
           'sources/': [
             ['exclude', '_(gtk|x)\\.cc$'],
@@ skipping 213 matching lines @@
                 'shutil.copyfile(\'<(ui_copy_target)\', \'<(ui_copy_dest)\'); ' \
                 'os.chmod(\'<(ui_copy_dest)\', 0700)'
               ]
             }
           ],
         },
       ],
     }],
   ],
 }