Add support of vrdisplayconnect and vrdisplaydisconnect event

third_party/WebKit/Source/modules/vr/VRController.cpp

Index: third_party/WebKit/Source/modules/vr/VRController.cpp
diff --git a/third_party/WebKit/Source/modules/vr/VRController.cpp b/third_party/WebKit/Source/modules/vr/VRController.cpp
index 87fea396354c6aee52faa57ee75ec9d40fd90b47..48635b8115b27556955cbafcf94327d32334128b 100644
--- a/third_party/WebKit/Source/modules/vr/VRController.cpp
+++ b/third_party/WebKit/Source/modules/vr/VRController.cpp
@@ -177,6 +177,28 @@ void VRController::OnExitPresent(unsigned index)
         vrDisplay->forceExitPresent();
 }
 
+void VRController::OnDisplayConnected(device::blink::VRDisplayPtr display)
+{
+    VRDisplay* vrDisplay = createOrUpdateDisplay(display);
+    if (!vrDisplay)
+        return;
+
+    m_navigatorVR->fireVREvent(VRDisplayEvent::create(
+        EventTypeNames::vrdisplayconnect, true, false, vrDisplay, "connect"));
+}
+
+void VRController::OnDisplayDisconnected(unsigned index)
+{
+    VRDisplay* vrDisplay = getDisplayForIndex(index);
+    if (!vrDisplay)
+        return;
+
+    vrDisplay->disconnected();
+
+    m_navigatorVR->fireVREvent(VRDisplayEvent::create(
+        EventTypeNames::vrdisplaydisconnect, true, false, vrDisplay, "disconnect"));
+}
+
 void VRController::contextDestroyed()
 {
     // If the document context was destroyed, shut down the client connection