Revert of Android WebVR implementation, Cardboard 0.5.5 SDK

content/browser/vr/vr_device_manager.h

Index: content/browser/vr/vr_device_manager.h
diff --git a/content/browser/vr/vr_device_manager.h b/content/browser/vr/vr_device_manager.h
index 58789f767be8ffca376e78b2fb3c6a62ae0ad4bf..6c8dc9646a8d882c1b656ef1aa2b8d94aaa2005a 100644
--- a/content/browser/vr/vr_device_manager.h
+++ b/content/browser/vr/vr_device_manager.h
@@ -20,7 +20,7 @@
 
 namespace content {
 
-class VRDeviceManager : public VRService {
+class VRDeviceManager : public VRService, public mojo::ErrorHandler {
  public:
   ~VRDeviceManager() override;
 
@@ -51,8 +51,8 @@
                       const GetSensorStateCallback& callback) override;
   void ResetSensor(uint32_t index) override;
 
-  // Mojo connection error handler.
-  void OnConnectionError();
+  // mojo::ErrorHandler implementation
+  void OnConnectionError() override;
 
   using ProviderList = std::vector<linked_ptr<VRDeviceProvider>>;
   ProviderList providers_;