Replace Chrome IPC with Mojo IPC for querying BatteryStatus service

content/browser/battery_status/battery_status_service.cc

Index: content/browser/battery_status/battery_status_service.cc
diff --git a/content/browser/battery_status/battery_status_service.cc b/content/browser/battery_status/battery_status_service.cc
deleted file mode 100644
index 67bcb9f4a46d4012a2915df2226d36305242b3e3..0000000000000000000000000000000000000000
--- a/content/browser/battery_status/battery_status_service.cc
+++ /dev/null
@@ -1,106 +0,0 @@
-// 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 "content/browser/battery_status/battery_status_service.h"
-
-#include "base/bind.h"
-#include "content/browser/battery_status/battery_status_manager.h"
-#include "content/public/browser/browser_thread.h"
-
-namespace content {
-
-BatteryStatusService::BatteryStatusService()
-    : update_callback_(base::Bind(&BatteryStatusService::UpdateBatteryStatus,
-                                  base::Unretained(this))),
-      status_updated_(false),
-      is_shutdown_(false) {
-  callback_list_.set_removal_callback(
-      base::Bind(&BatteryStatusService::ConsumersChanged,
-                 base::Unretained(this)));
-}
-
-BatteryStatusService::~BatteryStatusService() {
-}
-
-BatteryStatusService* BatteryStatusService::GetInstance() {
-  return Singleton<BatteryStatusService,
-                   LeakySingletonTraits<BatteryStatusService> >::get();
-}
-
-scoped_ptr<BatteryStatusService::BatteryUpdateSubscription>
-BatteryStatusService::AddCallback(const BatteryUpdateCallback& callback) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-  DCHECK(!is_shutdown_);
-
-  if (!battery_fetcher_)
-    battery_fetcher_ = BatteryStatusManager::Create(update_callback_);
-
-  if (callback_list_.empty()) {
-    bool success = battery_fetcher_->StartListeningBatteryChange();
-    if (!success) {
-        // Make sure the promise resolves with the default values in Blink.
-        callback.Run(blink::WebBatteryStatus());
-    }
-  }
-
-  if (status_updated_) {
-    // Send recent status to the new callback if already available.
-    callback.Run(status_);
-  }
-
-  return callback_list_.Add(callback);
-}
-
-void BatteryStatusService::ConsumersChanged() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-  DCHECK(!is_shutdown_);
-
-  if (callback_list_.empty()) {
-      battery_fetcher_->StopListeningBatteryChange();
-      status_updated_ = false;
-  }
-}
-
-void BatteryStatusService::UpdateBatteryStatus(
-    const blink::WebBatteryStatus& status) {
-  DCHECK(!is_shutdown_);
-  BrowserThread::PostTask(BrowserThread::IO,
-                          FROM_HERE,
-                          base::Bind(&BatteryStatusService::NotifyConsumers,
-                                     base::Unretained(this), status));
-}
-
-void BatteryStatusService::NotifyConsumers(
-    const blink::WebBatteryStatus& status) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-
-  if (callback_list_.empty())
-    return;
-
-  status_ = status;
-  status_updated_ = true;
-  callback_list_.Notify(status);
-}
-
-void BatteryStatusService::Shutdown() {
-  if (!callback_list_.empty())
-    battery_fetcher_->StopListeningBatteryChange();
-  battery_fetcher_.reset();
-  is_shutdown_ = true;
-}
-
-const BatteryStatusService::BatteryUpdateCallback&
-BatteryStatusService::GetUpdateCallbackForTesting() const {
-  return update_callback_;
-}
-
-void BatteryStatusService::SetBatteryManagerForTesting(
-    BatteryStatusManager* test_battery_manager) {
-  battery_fetcher_.reset(test_battery_manager);
-  blink::WebBatteryStatus status;
-  status_ = status;
-  status_updated_ = false;
-}
-
-}  // namespace content