[Device Service] Decouple NFC implementation from //content

content/browser/web_contents/web_contents_impl.cc

Index: content/browser/web_contents/web_contents_impl.cc
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index c4e6c16e2400196297b13bc18475af672e2d3247..7603d96b31e322cb36c362cd86349361293ac987 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -2628,6 +2628,12 @@ device::mojom::WakeLockContext* WebContentsImpl::GetWakeLockServiceContext() {
   return wake_lock_context_host_->GetWakeLockContext();
 }
 
+void WebContentsImpl::GetNFC(device::nfc::mojom::NFCRequest request) {
+  if (!nfc_host_)
+    nfc_host_.reset(new NFCHost(this));
+  nfc_host_->GetNFC(std::move(request));
+}
+
 void WebContentsImpl::OnShowValidationMessage(
     RenderViewHostImpl* source,
     const gfx::Rect& anchor_in_root_view,
@@ -4318,10 +4324,6 @@ void WebContentsImpl::RenderFrameCreated(RenderFrameHost* render_frame_host) {
     render_frame_host->Send(
         new FrameMsg_EnableViewSourceMode(render_frame_host->GetRoutingID()));
   }
-#if defined(OS_ANDROID)
-  render_frame_host->GetInterfaceRegistry()->AddInterface(
-      GetJavaInterfaces()->CreateInterfaceFactory<device::nfc::mojom::NFC>());
-#endif
 }
 
 void WebContentsImpl::RenderFrameDeleted(RenderFrameHost* render_frame_host) {