Adding Chrome-side WebVR interface

content/renderer/vr/vr_dispatcher.cc

+// 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/renderer/vr/vr_dispatcher.h"
+
+#include "content/public/common/service_registry.h"
+#include "content/renderer/vr/vr_type_converters.h"
+
+namespace content {
+
+VRDispatcher::VRDispatcher(ServiceRegistry* service_registry)
+    : service_registry_(service_registry) {
+}
+
+VRDispatcher::~VRDispatcher() {
+}
+
+VRServicePtr& VRDispatcher::GetVRServicePtr() {
+  if (!vr_service_) {
+    service_registry_->ConnectToRemoteService(mojo::GetProxy(&vr_service_));
+  }
+  return vr_service_;
+}
+
+void VRDispatcher::getDevices(blink::WebVRGetDevicesCallback* callback) {
+  int request_id = pending_requests_.Add(callback);
+  GetVRServicePtr()->GetDevices(base::Bind(&VRDispatcher::OnGetDevices,
+                                           base::Unretained(this), request_id));
+}
+
+void VRDispatcher::getSensorState(unsigned int index,
+                                  blink::WebHMDSensorState& state) {
+  GetVRServicePtr()->GetSensorState(
+      index,
+      base::Bind(&VRDispatcher::OnGetSensorState, base::Unretained(&state)));
+
+  // This call needs to return results synchronously in order to be useful and
+  // provide the lowest latency results possible.
+  GetVRServicePtr().WaitForIncomingResponse();
+}
+
+void VRDispatcher::resetSensor(unsigned int index) {
+  GetVRServicePtr()->ResetSensor(index);
+}
+
+void VRDispatcher::OnGetDevices(int request_id,
+                                const mojo::Array<VRDeviceInfoPtr>& devices) {
+  blink::WebVector<blink::WebVRDevice> web_devices(devices.size());
+
+  blink::WebVRGetDevicesCallback* callback =
+      pending_requests_.Lookup(request_id);
+  if (!callback)
+    return;
+
+  for (size_t i = 0; i < devices.size(); ++i) {
+    web_devices[i] = devices[i].To<blink::WebVRDevice>();
+  }
+
+  callback->onSuccess(&web_devices);
+  pending_requests_.Remove(request_id);
+}
+
+void VRDispatcher::OnGetSensorState(blink::WebHMDSensorState* state,
+                                    const VRSensorStatePtr& mojo_state) {
+  *state = mojo_state.To<blink::WebHMDSensorState>();
+}
+
+}  // namespace content