Revert of Wake Lock API implementation (Chromium part)

content/renderer/wake_lock/wake_lock_dispatcher.cc

-// Copyright 2015 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 "content/renderer/wake_lock/wake_lock_dispatcher.h"
-
-#include "content/public/common/service_registry.h"
-#include "content/public/renderer/render_frame.h"
-
-namespace content {
-
-WakeLockDispatcher::WakeLockDispatcher(RenderFrame* render_frame)
-    : RenderFrameObserver(render_frame),
-      blink::WebWakeLockClient() {
-}
-
-WakeLockDispatcher::~WakeLockDispatcher() {
-}
-
-void WakeLockDispatcher::requestKeepScreenAwake(bool keepScreenAwake) {
-  if (!wake_lock_service_) {
-    render_frame()->GetServiceRegistry()->ConnectToRemoteService(
-        mojo::GetProxy(&wake_lock_service_));
-  }
-
-  if (keepScreenAwake) {
-    wake_lock_service_->RequestWakeLock();
-  } else {
-    wake_lock_service_->CancelWakeLock();
-  }
-}
-
-}  // namespace content