Revert of Android WebVR implementation, Cardboard 0.5.5 SDK

content/browser/vr/vr_device_provider.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 CONTENT_BROWSER_VR_VR_DEVICE_PROVIDER_H
 #define CONTENT_BROWSER_VR_VR_DEVICE_PROVIDER_H
 
 #include <vector>
 
 namespace content {
 
 class VRDevice;
 
 class VRDeviceProvider {
  public:
   VRDeviceProvider() {}
   virtual ~VRDeviceProvider() {}
 
-  virtual void GetDevices(std::vector<VRDevice*>* devices) = 0;
+  virtual void GetDevices(std::vector<VRDevice*>& devices) = 0;
 
   // If the VR API requires initialization that should happen here.
   virtual void Initialize() = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_VR_VR_DEVICE_PROVIDER_H