Use fake Input Device Settings with chrome://device-emulator

chrome/browser/chromeos/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("//chrome/chrome_tests.gni")
 import("//media/media_options.gni")
 import("//third_party/protobuf/proto_library.gni")
 
@@ skipping 156 matching lines @@
     ]
   }
 
   if (use_cras) {
     defines += [ "USE_CRAS" ]
   }
 
   if (ui_compositor_image_transport) {
     deps += [ "//ui/gl" ]
   }
+
+  if (!is_official_build && is_debug) {
+    sources += rebase_path(gypi_values.browser_chromeos_non_official_sources,
+                           ".",
+                           "//chrome")
+  }
 }
 
 source_set("unit_tests") {
   testonly = true
 
   sources = rebase_path(
           chrome_tests_unit_gypi_values.chrome_unit_tests_chromeos_sources +
               chrome_tests_unit_gypi_values.chrome_unit_tests_arc_sources,
           ".",
           "//chrome")
@@ skipping 30 matching lines @@
     "policy/proto/install_attributes.proto",
   ]
 }
 
 proto_library("attestation_proto") {
   sources = [
     "attestation/attestation_key_payload.proto",
     "attestation/attestation_signed_data.proto",
   ]
 }