Remove clearContext() from VRController::contextDestroyed

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 "bindings/core/v8/ScriptPromiseResolver.h"
 #include "core/dom/DOMException.h"
 #include "core/dom/Document.h"
 #include "core/frame/LocalFrame.h"
@@ skipping 78 matching lines @@
 void VRController::onGetDisplays() {
   while (!m_pendingGetDevicesCallbacks.isEmpty()) {
     std::unique_ptr<VRGetDevicesCallback> callback =
         m_pendingGetDevicesCallbacks.takeFirst();
     callback->onSuccess(m_displays);
   }
 }
 
 void VRController::contextDestroyed() {
   dispose();
-  // The context is not automatically cleared, so do it manually.
-  ContextLifecycleObserver::clearContext();
 }
 
 void VRController::dispose() {
   // If the document context was destroyed, shut down the client connection
   // and never call the mojo service again.
   m_service.reset();
   m_binding.Close();
 
   // Shutdown all displays' message pipe
   for (size_t i = 0; i < m_displays.size(); ++i)
     m_displays[i]->dispose();
 }
 
 DEFINE_TRACE(VRController) {
   visitor->trace(m_navigatorVR);
   visitor->trace(m_displays);
 
   ContextLifecycleObserver::trace(visitor);
 }
 
 }  // namespace blink