Adding Chrome-side WebVR interface

content/browser/vr/cardboard/cardboard_vr_device_provider.cc

Index: content/browser/vr/cardboard/cardboard_vr_device_provider.cc
diff --git a/content/browser/vr/cardboard/cardboard_vr_device_provider.cc b/content/browser/vr/cardboard/cardboard_vr_device_provider.cc
new file mode 100644
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+++ b/content/browser/vr/cardboard/cardboard_vr_device_provider.cc
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+// 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.
+
+#include "content/browser/vr/cardboard/cardboard_vr_device_provider.h"
+
+#include "content/browser/vr/cardboard/cardboard_vr_device.h"
+
+namespace content {
+
+CardboardVRDeviceProvider::CardboardVRDeviceProvider()
+    : VRDeviceProvider() {
+}
+
+CardboardVRDeviceProvider::~CardboardVRDeviceProvider() {
+}
+
+void CardboardVRDeviceProvider::GetDevices(std::vector<VRDevice*>& devices) {
+  if (!cardboard_device_) {
+    cardboard_device_.reset(new CardboardVRDevice(this));
+  }
+
+  devices.push_back(cardboard_device_.get());
+}
+
+void CardboardVRDeviceProvider::Initialize() {
+  // No initialization needed for Cardboard devices.
+}
+
+}  // namespace content