Add missing header files to GN files (2 of N)

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/chromecast_build.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//build/split_static_library.gni")
 import("//chrome/common/features.gni")
@@ skipping 1404 matching lines @@
       "//ash/strings",
       "//components/session_manager/core",
       "//components/user_manager",
       "//services/ui/public/cpp",
       "//services/ui/public/interfaces",
       "//ui/app_list/presenter",
       "//ui/app_list/presenter:mojom",
       "//ui/keyboard:mojom",
     ]
   } else {  # Not ash.
-    sources += [ "views/touch_uma/touch_uma.cc" ]
+    sources += [
+      "views/touch_uma/touch_uma.cc",
+      "views/touch_uma/touch_uma.h",
+    ]
   }
   if (toolkit_views) {
     sources += [
       "autofill/save_card_bubble_controller.h",
       "autofill/save_card_bubble_controller_impl.cc",
       "autofill/save_card_bubble_controller_impl.h",
       "autofill/save_card_bubble_view.h",
       "views/apps/app_info_dialog/app_info_dialog_container.cc",
       "views/apps/app_info_dialog/app_info_dialog_container.h",
       "views/apps/app_info_dialog/app_info_dialog_views.cc",
@@ skipping 2119 matching lines @@
       "test/test_confirm_bubble_model.cc",
       "test/test_confirm_bubble_model.h",
     ]
     deps += [ "//chrome/test:test_support_ui" ]
   }
 
   if (enable_extensions) {
     deps += [ "//extensions/browser" ]
   }
 }