bluetooth: Remove disconnect when page hidden

third_party/WebKit/Source/modules/bluetooth/BluetoothDevice.cpp

 // 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 "modules/bluetooth/BluetoothDevice.h"
 
 #include "bindings/core/v8/CallbackPromiseAdapter.h"
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "core/dom/DOMException.h"
-#include "core/dom/Document.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/events/Event.h"
-#include "core/page/PageVisibilityState.h"
 #include "modules/bluetooth/BluetoothError.h"
 #include "modules/bluetooth/BluetoothRemoteGATTServer.h"
 #include "modules/bluetooth/BluetoothSupplement.h"
 #include "public/platform/modules/bluetooth/WebBluetooth.h"
 
 namespace blink {
 
 BluetoothDevice::BluetoothDevice(ExecutionContext* context, PassOwnPtr<WebBluetoothDevice> webDevice)
     : ActiveDOMObject(context)
-    , PageLifecycleObserver(toDocument(context)->page())
     , m_webDevice(webDevice)
-    , m_adData(BluetoothAdvertisingData::create(m_webDevice->txPower,
-        m_webDevice->rssi))
+    , m_adData(BluetoothAdvertisingData::create(m_webDevice->txPower, m_webDevice->rssi))
     , m_gatt(BluetoothRemoteGATTServer::create(this))
 {
     // See example in Source/platform/heap/ThreadState.h
     ThreadState::current()->registerPreFinalizer(this);
 }
 
 BluetoothDevice* BluetoothDevice::take(ScriptPromiseResolver* resolver, PassOwnPtr<WebBluetoothDevice> webDevice)
 {
     ASSERT(webDevice);
     BluetoothDevice* device = new BluetoothDevice(resolver->getExecutionContext(), webDevice);
     device->suspendIfNeeded();
     return device;
 }
 
 void BluetoothDevice::dispose()
 {
     disconnectGATTIfConnected();
 }
 
 void BluetoothDevice::stop()
 {
     disconnectGATTIfConnected();
 }
 
-void BluetoothDevice::pageVisibilityChanged()
-{
-    if (!page()->isPageVisible() && disconnectGATTIfConnected()) {
-        dispatchEvent(Event::create(EventTypeNames::gattserverdisconnected));
-    }
-}
-
 bool BluetoothDevice::disconnectGATTIfConnected()
 {
     if (m_gatt->connected()) {
         m_gatt->setConnected(false);
         BluetoothSupplement::fromExecutionContext(getExecutionContext())->disconnect(id());
         return true;
     }
     return false;
 }
 
 const WTF::AtomicString& BluetoothDevice::interfaceName() const
 {
     return EventTargetNames::BluetoothDevice;
 }
 
 ExecutionContext* BluetoothDevice::getExecutionContext() const
 {
     return ActiveDOMObject::getExecutionContext();
 }
 
 DEFINE_TRACE(BluetoothDevice)
 {
     RefCountedGarbageCollectedEventTargetWithInlineData<BluetoothDevice>::trace(visitor);
     ActiveDOMObject::trace(visitor);
-    PageLifecycleObserver::trace(visitor);
     visitor->trace(m_adData);
     visitor->trace(m_gatt);
 }
 
 unsigned BluetoothDevice::deviceClass(bool& isNull)
 {
     isNull = false;
     return m_webDevice->deviceClass;
 }
 
@@ skipping 33 matching lines @@
         uuids[i] = m_webDevice->uuids[i];
     return uuids;
 }
 
 ScriptPromise BluetoothDevice::connectGATT(ScriptState* scriptState)
 {
     return m_gatt->connect(scriptState);
 }
 
 } // namespace blink