Fix 'gn check' errors in //ui/* and add to default checked set

ui/base/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")
 
 if (is_android) {
   import("//build/config/android/config.gni")
   import("//build/config/android/rules.gni")
 }
 
 component("base") {
   output_name = "ui_base"
   sources = [
     "accelerators/accelerator.cc",
     "accelerators/accelerator.h",
     "accelerators/accelerator_history.cc",
     "accelerators/accelerator_history.h",
     "accelerators/accelerator_manager.cc",
     "accelerators/accelerator_manager.h",
     "accelerators/platform_accelerator.h",
-    "ui_base_export.h",
   ]
 
   defines = [ "UI_BASE_IMPLEMENTATION" ]
 
   public_deps = [
     "//base",
     "//skia",
     "//ui/events",
     "//ui/events/platform",
     "//ui/events:events_base",
@@ skipping 48 matching lines @@
   if (use_x11) {
     #'all_dependent_settings': {
     #'ldflags': [
     #'-L<(PRODUCT_DIR)',
     #],
     #},
     configs += [ "//build/config/linux:x11" ]
   }
 
   if (is_android) {
-    deps += [ ":ui_base_jni_headers" ]
+    deps += [
+      ":ui_base_jni_headers",
+      "//cc",
+    ]
 
     libs += [ "jnigraphics" ]
   }
 
   if (is_android && is_android_webview_build) {
     deps += [
       #TODO(GYP): port this component to GN.
       #"//ui/android:ui_java",
     ]
   }
@@ skipping 92 matching lines @@
           "//chromeos",
           "//ui/aura:test_support",
           "//ui/events:gesture_detection",
           "//ui/chromeos:ui_chromeos",
         ]
       }
     }
   }
 }
 # TODO(GYP) Mac (ui_unittest_bundle) and Android (ui_unittests_apk).