Add support of vrdisplayconnect and vrdisplaydisconnect event

device/vr/android/gvr/gvr_device.h

 // Copyright 2016 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_ANDROID_GVR_DEVICE_H
 #define DEVICE_VR_ANDROID_GVR_DEVICE_H
 
 #include "base/macros.h"
 #include "device/vr/vr_device.h"
 
@@ skipping 10 matching lines @@
   VRDisplayPtr GetVRDevice() override;
   VRPosePtr GetPose() override;
   void ResetPose() override;
 
   void RequestPresent() override;
   void ExitPresent() override;
 
   void SubmitFrame() override;
   void UpdateLayerBounds(VRLayerBoundsPtr leftBounds,
                          VRLayerBoundsPtr rightBounds) override;
+  virtual void PollEvents() override;
 
  private:
   GvrDelegate* delegate_;
 
+  bool isConnected_;
+  bool isConnectionStatusChanged_;

[bajones, 2016/09/12 01:36:15]

These values are no longer used and the PollEvents call is empty. With this
latest update we don't need any changes to gvr_device.h/cc, so let's just revert
those to files.

[shaobo.yan, 2016/09/12 01:59:01]

Done.

+
   DISALLOW_COPY_AND_ASSIGN(GvrDevice);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_VR_ANDROID_GVR_DEVICE_H