Delete //sky/services/platform

sky/services/platform/platform_impl.cc

-// 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.
-
-#include "sky/services/platform/platform_impl.h"
-
-namespace sky {
-
-PlatformImpl::PlatformImpl()
-    : main_thread_task_runner_(base::MessageLoop::current()->task_runner()) {
-}
-
-PlatformImpl::~PlatformImpl() {
-}
-
-blink::WebString PlatformImpl::defaultLocale() {
-  return blink::WebString::fromUTF8("en-US");
-}
-
-base::SingleThreadTaskRunner* PlatformImpl::mainThreadTaskRunner() {
-  return main_thread_task_runner_.get();
-}
-
-}  // namespace sky