Duplicate -Move DevTools out of ash and turn it to a component.

ui/views/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/features.gni")
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 import("//ui/base/ui_features.gni")
 import("//ui/ozone/ozone.gni")
 import("//ui/vector_icons/vector_icons.gni")
@@ skipping 1027 matching lines @@
       }
     }
   }
 
   if (!is_chromeos) {
     sources += [ "widget/desktop_widget_unittest.cc" ]
   }
 
   deps = [
     ":views_unittests_sources",
+    "//components/ui_devtools:devtool_unittests",
   ]
 }
 
 if (is_mac) {
   test("macviews_interactive_ui_tests") {
     sources = [
       "cocoa/bridged_native_widget_interactive_uitest.mm",
       "run_all_unittests_main.cc",
       "widget/native_widget_mac_interactive_uitest.mm",
     ]
     deps = [
       ":test_support",
       ":views",
       "//base",
       "//base/test:test_support",
       "//skia",
       "//testing/gtest",
       "//ui/base:test_support",
       "//ui/compositor",
       "//ui/events:test_support",
       "//ui/gl:test_support",
       "//ui/resources",
       "//ui/resources:ui_test_pak",
       "//ui/strings",
     ]
   }
 }