GN: Mojo wget, sample_app, surfaces app and component build

mojo/services/native_viewport/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")
 import("//mojo/system.gni")
 
 static_library("native_viewport") {
   output_name = "mojo_native_viewport"
 
   deps = [
     "//base",
     "//ui/events",
+    "//ui/events/platform",
     "//ui/gfx",
     "//ui/gfx/geometry",
     "//mojo/public/cpp/application:chromium",
     "//mojo/common",
     "//mojo/environment:chromium",
     "//mojo/services/public/cpp/geometry",
     "//mojo/services/public/interfaces/geometry",
     "//mojo/services/gles2",
     "//mojo/services/public/cpp/input_events",
     "//mojo/services/public/interfaces/native_viewport",
@@ skipping 19 matching lines @@
 
   if (is_win) {
     deps += [
       # TODO(GYP)
       # '../ui/platform_window/win/win_window.gyp:win_window',
     ]
   }
 
   if (use_x11) {
     sources += [ "platform_viewport_x11.cc" ]
-    deps += [ "//ui/platform_window/x11" ]
+    deps += [
+      "//ui/events/platform/x11",
+      "//ui/platform_window/x11",
+    ]
   }
 
   if (use_ozone) {
     sources += [ "platform_viewport_ozone.cc" ]
   }
 }