Remove Battery Status API support code from Blink

Source/modules/battery/BatteryController.cpp

-/*
- *  Copyright (C) 2012 Samsung Electronics
- *  Copyright (C) 2012 Google Inc.
- *
- *  This library is free software; you can redistribute it and/or
- *  modify it under the terms of the GNU Library General Public
- *  License as published by the Free Software Foundation; either
- *  version 2 of the License, or (at your option) any later version.
- *
- *  This library is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- *  Library General Public License for more details.
- *
- *  You should have received a copy of the GNU Library General Public License
- *  along with this library; see the file COPYING.LIB.  If not, write to
- *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- *  Boston, MA 02110-1301, USA.
- */
-
-#include "config.h"
-#include "modules/battery/BatteryController.h"
-
-#if ENABLE(BATTERY_STATUS)
-
-#include "core/dom/Event.h"
-#include "modules/battery/BatteryClient.h"
-#include "modules/battery/BatteryStatus.h"
-
-namespace WebCore {
-
-BatteryController::BatteryController(BatteryClient* client)
-    : m_client(client)
-{
-    ASSERT(m_client);
-}
-
-BatteryController::~BatteryController()
-{
-    for (ListenerVector::iterator it = m_listeners.begin(); it != m_listeners.end(); ++it)
-        (*it)->batteryControllerDestroyed();
-    m_client->batteryControllerDestroyed();
-}
-
-PassOwnPtr<BatteryController> BatteryController::create(BatteryClient* client)
-{
-    return adoptPtr(new BatteryController(client));
-}
-
-void BatteryController::addListener(BatteryManager* batteryManager)
-{
-    m_listeners.append(batteryManager);
-    m_client->startUpdating();
-}
-
-void BatteryController::removeListener(BatteryManager* batteryManager)
-{
-    size_t pos = m_listeners.find(batteryManager);
-    if (pos == WTF::notFound)
-        return;
-    m_listeners.remove(pos);
-    if (m_listeners.isEmpty())
-        m_client->stopUpdating();
-}
-
-void BatteryController::updateBatteryStatus(PassRefPtr<BatteryStatus> batteryStatus)
-{
-    RefPtr<BatteryStatus> status = batteryStatus;
-    if (m_batteryStatus) {
-        if (m_batteryStatus->charging() != status->charging())
-            didChangeBatteryStatus(WebCore::eventNames().chargingchangeEvent, status);
-        else if (status->charging() && m_batteryStatus->chargingTime() != status->chargingTime())
-            didChangeBatteryStatus(WebCore::eventNames().chargingtimechangeEvent, status);
-        else if (!status->charging() && m_batteryStatus->dischargingTime() != status->dischargingTime())
-            didChangeBatteryStatus(WebCore::eventNames().dischargingtimechangeEvent, status);
-
-        if (m_batteryStatus->level() != status->level())
-            didChangeBatteryStatus(WebCore::eventNames().levelchangeEvent, status);
-    }
-
-    m_batteryStatus = status.release();
-}
-
-void BatteryController::didChangeBatteryStatus(const AtomicString& eventType, PassRefPtr<BatteryStatus> batteryStatus)
-{
-    RefPtr<Event> event = Event::create(eventType, false, false);
-    RefPtr<BatteryStatus> battery = batteryStatus;
-    for (ListenerVector::iterator it = m_listeners.begin(); it != m_listeners.end(); ++it)
-        (*it)->didChangeBatteryStatus(event, battery);
-}
-
-const char* BatteryController::supplementName()
-{
-    return "BatteryController";
-}
-
-bool BatteryController::isActive(Page* page)
-{
-    return static_cast<bool>(BatteryController::from(page));
-}
-
-void provideBatteryTo(Page* page, BatteryClient* client)
-{
-    Supplement<Page>::provideTo(page, BatteryController::supplementName(), BatteryController::create(client));
-}
-
-}
-
-#endif // BATTERY_STATUS
-