Implement WebVR presentation pausing for VR Shell Menu Mode

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

 // Copyright 2015 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/vr/VRController.h"
 
 #include "core/dom/DOMException.h"
 #include "core/dom/Document.h"
 #include "core/frame/LocalFrame.h"
 #include "modules/vr/NavigatorVR.h"
@@ skipping 187 matching lines @@
   if (!vrDisplay)
     return;
 
   vrDisplay->disconnected();
 
   m_navigatorVR->fireVREvent(
       VRDisplayEvent::create(EventTypeNames::vrdisplaydisconnect, true, false,
                              vrDisplay, "disconnect"));
 }
 
+void VRController::OnDisplayBlur(unsigned index) {
+  VRDisplay* vrDisplay = getDisplayForIndex(index);
+  if (!vrDisplay)
+    return;
+
+  vrDisplay->onDisplayBlur();
+}
+
+void VRController::OnDisplayFocus(unsigned index) {
+  VRDisplay* vrDisplay = getDisplayForIndex(index);
+  if (!vrDisplay)
+    return;
+
+  vrDisplay->onDisplayFocus();
+}
+
 void VRController::contextDestroyed() {
   // If the document context was destroyed, shut down the client connection
   // and never call the mojo service again.
   m_binding.Close();
   m_service.reset();
 
   // The context is not automatically cleared, so do it manually.
   ContextLifecycleObserver::clearContext();
 }
 
 DEFINE_TRACE(VRController) {
   visitor->trace(m_navigatorVR);
   visitor->trace(m_displays);
 
   ContextLifecycleObserver::trace(visitor);
 }
 
 }  // namespace blink