fix most gn check issues in //ui

ui/events/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("//testing/test.gni")
 
 if (is_android) {
   import("//build/config/android/rules.gni")
 }
@@ skipping 45 matching lines @@
   defines = [ "EVENTS_BASE_IMPLEMENTATION" ]
 
   deps = [
     ":dom_keycode_converter",
     "//base/third_party/dynamic_annotations",
     "//skia",
   ]
 
   public_deps = [
     "//base",
+    "//ipc",
     "//ui/events/platform",
     "//ui/gfx",
     "//ui/gfx/geometry",
   ]
 
   if (use_x11) {
     configs += [ "//build/config/linux:x11" ]
 
     sources += [
       "keycodes/keyboard_code_conversion_x.cc",
@@ skipping 280 matching lines @@
   ]
 
   deps = [
     ":dom_keycode_converter",
     ":events",
     ":events_base",
     ":gesture_detection",
     ":test_support",
     "//base",
     "//base/test:run_all_unittests",
+    "//cc",
+    "//ipc",
     "//ipc:test_support",
     "//skia",
+    "//testing/gmock",
     "//testing/gtest",
     "//ui/events/devices",
     "//ui/events/ipc:events_ipc",
     "//ui/events/platform",
     "//ui/gfx:test_support",
   ]
 
   if (!is_ios) {
     sources += [
       "blink/input_handler_proxy_unittest.cc",
@@ skipping 60 matching lines @@
     sources += [ "android/motion_event_android_unittest.cc" ]
   }
 }
 
 if (is_android) {
   generate_jar_jni("motionevent_jni_headers") {
     jni_package = "ui"
     classes = [ "android/view/MotionEvent.class" ]
   }
 }