Ports VRService to be hosted in the device service.

third_party/WebKit/Source/modules/vr/VRController.cpp

Index: third_party/WebKit/Source/modules/vr/VRController.cpp
diff --git a/third_party/WebKit/Source/modules/vr/VRController.cpp b/third_party/WebKit/Source/modules/vr/VRController.cpp
index 52a020797bd6e61201aa725781c1f57808606a7f..626a21ff512a429c208c39540049117c855fe923 100644
--- a/third_party/WebKit/Source/modules/vr/VRController.cpp
+++ b/third_party/WebKit/Source/modules/vr/VRController.cpp
@@ -10,7 +10,8 @@
 #include "core/frame/LocalFrame.h"
 #include "modules/vr/NavigatorVR.h"
 #include "modules/vr/VRGetDevicesCallback.h"
-#include "public/platform/InterfaceProvider.h"
+#include "platform/ServiceConnector.h"
+#include "services/device/public/interfaces/constants.mojom-blink.h"
 
 #include "wtf/Assertions.h"
 
@@ -21,8 +22,8 @@ VRController::VRController(NavigatorVR* navigatorVR)
       m_navigatorVR(navigatorVR),
       m_displaySynced(false),
       m_binding(this) {
-  navigatorVR->document()->frame()->interfaceProvider()->getInterface(

[blundell, 2017/01/12 09:59:56]

Brandon, do you know this interface was exposed at the per-frame level rather
than the per-process level? I don't see that VRServiceImpl has any per-frame
context.

-      mojo::MakeRequest(&m_service));
+  ServiceConnector::instance().connectToInterface(
+      device::mojom::blink::kServiceName, mojo::MakeRequest(&m_service));
   m_service->SetClient(
       m_binding.CreateInterfacePtrAndBind(),
       convertToBaseCallback(