Adding Chrome-side WebVR interface

content/renderer/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_dispatcher.h"
+
+#include "content/public/renderer/render_thread.h"
+#include "ipc/ipc_sync_message_filter.h"
+
+namespace content {
+
+VRDispatcher::VRDispatcher() {
+}
+
+VRDispatcher::~VRDispatcher() {
+}
+
+void VRDispatcher::GetVRDevices(
+    blink::WebVector<blink::WebVRDevice>* devices) {
+  std::vector<blink::WebVRDevice> ipcDevices;
+
+  CHECK(RenderThread::Get()->Send(new VRMsg_GetVRDevices(

[no sievers, 2015/03/19 01:24:53]

not sure about the CHECKs(). or why we would do this here and not elsewhere
(which also seems very odd).

+      &ipcDevices)));
+
+  if (devices && ipcDevices.size() > 0)
+    devices->assign(&ipcDevices.front(), ipcDevices.size());
+}
+
+void VRDispatcher::GetHMDSensorState(
+    unsigned int index, blink::WebHMDSensorState& state) {
+  CHECK(RenderThread::Get()->Send(new VRMsg_GetHMDSensorState(index, &state)));

[no sievers, 2015/03/19 01:24:53]

On a related note... for GetSensorState and GetRendertargetRects, should they
return some sort of result? Ie. do we need to worry about this failing, and when
could this happen?

+}
+
+void VRDispatcher::ResetSensor(unsigned int index) {
+  CHECK(RenderThread::Get()->Send(new VRMsg_ResetSensor(
+      index)));
+}
+
+void VRDispatcher::GetRenderTargetRects(unsigned index,
+    blink::WebVRFieldOfView leftFov,
+    blink::WebVRFieldOfView rightFov,
+    blink::WebVRVector4* leftRect,
+    blink::WebVRVector4* rightRect) {
+  CHECK(RenderThread::Get()->Send(new VRMsg_GetRenderTargetRects(
+      index, leftFov, rightFov, leftRect, rightRect)));
+}
+
+bool VRDispatcher::OnControlMessageReceived(
+    const IPC::Message& message) {
+  return false;

[no sievers, 2015/03/19 01:24:53]

Why is this a RenderProcessObserver then?

+}
+
+} // namespace content