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 bc92c33ec8f19e1640dee2cab9506620a542cbe6..436767e38039af013dda345f1164c46e58bc8d91 100644
--- a/third_party/WebKit/Source/modules/vr/VRController.cpp
+++ b/third_party/WebKit/Source/modules/vr/VRController.cpp
@@ -115,6 +115,28 @@ void VRController::OnDisplayChanged(device::blink::VRDisplayPtr display)
     vrDisplay->update(display);
 }
 
+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