Work on GN build of Chrome.

chrome/browser/ui/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 
 gypi_values = exec_script(
     "//build/gypi_to_gn.py",
@@ skipping 198 matching lines @@
           gypi_values.chrome_browser_ui_views_non_mac_sources,
           ".", "//chrome")
     }
     if (use_ash) {
       sources += rebase_path(gypi_values.chrome_browser_ui_ash_views_sources,
                              ".", "//chrome")
       }
   }
   if (use_aura && !use_ozone && is_desktop_linux) {
     deps += [
+      "//build/config/linux:gio",
       # gtk2 is the only component that can interact with gtk2 in our new
       # world.
-      #'browser/ui/libgtk2ui/libgtk2ui.gyp:gtk2ui',  TODO(GYP)
-      "//build/config/linux:gio",
+      "//chrome/browser/ui/libgtk2ui",
     ]
   }
   if (is_win || is_mac || is_desktop_linux) {
     sources += rebase_path(gypi_values.chrome_browser_ui_desktop_sources,
                            ".", "//chrome")
   }
   if (use_aura) {
     sources += rebase_path(gypi_values.chrome_browser_ui_aura_sources,
                            ".", "//chrome")
     deps += [
@@ skipping 178 matching lines @@
     script = "//chrome/tools/build/mac/generate_localizer"
     sources = [ ]
     table_path = "$target_gen_dir/ui_localizer_table.h"
     outputs = [ table_path ]
     args = [ rebase_path(table_path, root_build_dir) ] +
              rebase_path(nib_gypi_values.mac_translated_xibs,
                          root_build_dir,
                          "//chrome")
   }
 }