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/common/vr_messages.h"
+#include "content/public/renderer/render_thread.h"
+
+namespace content {
+
+VRDispatcher::VRDispatcher(RenderFrame* render_frame)
+    : RenderFrameObserver(render_frame) {
+}
+
+VRDispatcher::~VRDispatcher() {
+}
+
+bool VRDispatcher::OnMessageReceived(const IPC::Message& message) {
+  bool handled = true;
+
+  IPC_BEGIN_MESSAGE_MAP(VRDispatcher, message)
+  IPC_MESSAGE_HANDLER(VRMsg_GetDevicesSuccess, OnGetDevicesSuccess)
+  IPC_MESSAGE_HANDLER(VRMsg_GetDevicesError, OnGetDevicesError)
+  IPC_MESSAGE_UNHANDLED(handled = false)
+  IPC_END_MESSAGE_MAP()
+
+  return handled;
+}
+
+void VRDispatcher::getDevices(blink::WebVRGetDevicesCallback* callback) {
+  int request_id = pending_requests_.Add(callback);
+  Send(new VRHostMsg_GetVRDevices(routing_id(), request_id));
+}
+
+void VRDispatcher::getSensorState(unsigned int index,
+                                  blink::WebHMDSensorState& state) {
+  Send(new VRHostMsg_GetSensorState(routing_id(), index, &state));
+}
+
+void VRDispatcher::resetSensor(unsigned int index) {
+  Send(new VRHostMsg_ResetSensor(routing_id(), index));
+}
+
+void VRDispatcher::OnGetDevicesSuccess(
+    int request_id,
+    const std::vector<blink::WebVRDevice>& devices) {
+  blink::WebVector<blink::WebVRDevice> web_devices;
+
+  blink::WebVRGetDevicesCallback* callback =
+      pending_requests_.Lookup(request_id);
+  if (!callback)
+    return;
+
+  if (devices.size() > 0)
+    web_devices.assign(&devices.front(), devices.size());
+
+  callback->onSuccess(&web_devices);
+  pending_requests_.Remove(request_id);
+}
+
+void VRDispatcher::OnGetDevicesError(int request_id) {
+  blink::WebVRGetDevicesCallback* callback =
+      pending_requests_.Lookup(request_id);
+  if (!callback)
+    return;
+  callback->onError();
+  pending_requests_.Remove(request_id);
+}
+
+}  // namespace content