Fix exiting WebVR via Android UI not fully exiting fullscreen.

device/vr/vr_device.h

 // 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.
 
 #ifndef DEVICE_VR_VR_DEVICE_H
 #define DEVICE_VR_VR_DEVICE_H
 
 #include "base/macros.h"
 #include "device/vr/vr_export.h"
 #include "device/vr/vr_service.mojom.h"
@@ skipping 35 matching lines @@
 
   virtual void AddService(VRServiceImpl* service);
   virtual void RemoveService(VRServiceImpl* service);
 
   // TODO(shaobo.yan@intel.com): Checks should be done against VRDisplayImpl and
   // the name should be considered.
   virtual bool IsAccessAllowed(VRServiceImpl* service);
   virtual bool IsPresentingService(VRServiceImpl* service);
 
   virtual void OnDisplayChanged();
-  virtual void OnExitPresent(VRServiceImpl* service);
+  virtual void OnExitPresent();
 
  protected:
   // Each Service have one VRDisplay with one VRDevice.
   // TODO(shaobo.yan@intel.com): Since the VRDisplayImpl knows its VRServiceImpl
   // we should
   // only need to store the VRDisplayImpl.
   using DisplayClientMap = std::map<VRServiceImpl*, VRDisplayImpl*>;
   DisplayClientMap displays_;
 
   // TODO(shaobo.yan@intel.com): Should track presenting VRDisplayImpl instead.
   VRServiceImpl* presenting_service_;
 
  private:
   VRDeviceProvider* provider_;
   unsigned int id_;
 
   static unsigned int next_id_;
 
   DISALLOW_COPY_AND_ASSIGN(VRDevice);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_VR_VR_DEVICE_H