bluetooth: Remove disconnect when page hidden

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

Index: third_party/WebKit/Source/modules/bluetooth/BluetoothDevice.cpp
diff --git a/third_party/WebKit/Source/modules/bluetooth/BluetoothDevice.cpp b/third_party/WebKit/Source/modules/bluetooth/BluetoothDevice.cpp
index 57585d5790b2e8c6de06b4eb55c6bb7f6d75bf60..eccadad46ac0a59969ee59a37b99a40087bfedcc 100644
--- a/third_party/WebKit/Source/modules/bluetooth/BluetoothDevice.cpp
+++ b/third_party/WebKit/Source/modules/bluetooth/BluetoothDevice.cpp
@@ -8,10 +8,8 @@
 #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"
@@ -21,10 +19,8 @@ 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
@@ -49,13 +45,6 @@ void BluetoothDevice::stop()
     disconnectGATTIfConnected();
 }
 
-void BluetoothDevice::pageVisibilityChanged()
-{
-    if (!page()->isPageVisible() && disconnectGATTIfConnected()) {
-        dispatchEvent(Event::create(EventTypeNames::gattserverdisconnected));
-    }
-}
-
 bool BluetoothDevice::disconnectGATTIfConnected()
 {
     if (m_gatt->connected()) {
@@ -80,7 +69,6 @@ DEFINE_TRACE(BluetoothDevice)
 {
     RefCountedGarbageCollectedEventTargetWithInlineData<BluetoothDevice>::trace(visitor);
     ActiveDOMObject::trace(visitor);
-    PageLifecycleObserver::trace(visitor);
     visitor->trace(m_adData);
     visitor->trace(m_gatt);
 }