Enable the dependency on google_toolbox_for_mac.

ui/app_list/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/ui.gni")
 
 component("app_list") {
   sources = [
     "app_list_constants.cc",
     "app_list_constants.h",
@@ skipping 150 matching lines @@
       "cocoa/apps_search_results_controller.h",
       "cocoa/apps_search_results_controller.mm",
       "cocoa/apps_search_results_model_bridge.h",
       "cocoa/apps_search_results_model_bridge.mm",
       "cocoa/item_drag_controller.h",
       "cocoa/item_drag_controller.mm",
       "cocoa/scroll_view_with_no_scrollbars.h",
       "cocoa/scroll_view_with_no_scrollbars.mm",
     ]
     deps += [
-      #"../../third_party/google_toolbox_for_mac/google_toolbox_for_mac.gyp:google_toolbox_for_mac",  TODO(GYP)
+      "//third_party/google_toolbox_for_mac",
     ]
     libs = [ "QuartzCore.framework" ]
   }
 }
 
 static_library("test_support") {
   sources = [
     "test/app_list_test_model.cc",
     "test/app_list_test_model.h",
     "test/app_list_test_view_delegate.cc",
@@ skipping 59 matching lines @@
       "cocoa/app_list_view_controller_unittest.mm",
       "cocoa/app_list_window_controller_unittest.mm",
       "cocoa/apps_grid_controller_unittest.mm",
       "cocoa/apps_search_box_controller_unittest.mm",
       "cocoa/apps_search_results_controller_unittest.mm",
       "cocoa/test/apps_grid_controller_test_helper.h",
       "cocoa/test/apps_grid_controller_test_helper.mm",
     ]
   }
 }