Updated VRService to match the latest Blink WebVR interface.

content/browser/vr/android/cardboard/cardboard_vr_device.h

Index: content/browser/vr/android/cardboard/cardboard_vr_device.h
diff --git a/content/browser/vr/android/cardboard/cardboard_vr_device.h b/content/browser/vr/android/cardboard/cardboard_vr_device.h
index 621754204710ee163825fbea9f2c0525bbe64061..1f88c6636fa289019498da2cb026c8bd3625bd17 100644
--- a/content/browser/vr/android/cardboard/cardboard_vr_device.h
+++ b/content/browser/vr/android/cardboard/cardboard_vr_device.h
@@ -20,16 +20,14 @@ class CardboardVRDevice : public VRDevice {
   explicit CardboardVRDevice(VRDeviceProvider* provider);
   ~CardboardVRDevice() override;
 
-  blink::mojom::VRDeviceInfoPtr GetVRDevice() override;
-  blink::mojom::VRSensorStatePtr GetSensorState() override;
-  void ResetSensor() override;
+  blink::mojom::VRDisplayPtr GetVRDevice() override;
+  blink::mojom::VRPosePtr GetPose() override;
+  void ResetPose() override;
 
  private:
   base::android::ScopedJavaGlobalRef<jobject> j_cardboard_device_;
   base::android::ScopedJavaGlobalRef<jfloatArray> j_head_matrix_;
 
-  unsigned int frame_index_;
-
   DISALLOW_COPY_AND_ASSIGN(CardboardVRDevice);
 };