[webnfc] Add default implementation for nfc mojo service.

content/browser/frame_host/render_frame_host_impl.cc

Index: content/browser/frame_host/render_frame_host_impl.cc
diff --git a/content/browser/frame_host/render_frame_host_impl.cc b/content/browser/frame_host/render_frame_host_impl.cc
index f885435fe468cdb8326dc9a2d704ff76d196f3b4..eb5e0cd4ef442fa7e396fbed6f453fde1e80ad01 100644
--- a/content/browser/frame_host/render_frame_host_impl.cc
+++ b/content/browser/frame_host/render_frame_host_impl.cc
@@ -78,6 +78,7 @@
 #include "content/public/common/isolated_world_ids.h"
 #include "content/public/common/url_constants.h"
 #include "content/public/common/url_utils.h"
+#include "device/nfc/nfc_impl.h"
 #include "ui/accessibility/ax_tree.h"
 #include "ui/accessibility/ax_tree_update.h"
 #include "ui/gfx/geometry/quad_f.h"
@@ -1934,6 +1935,9 @@ void RenderFrameHostImpl::RegisterMojoServices() {
                    base::Unretained(this)));
   }
 
+  GetServiceRegistry()->AddService<device::NFC>(

[Reilly Grant (use Gerrit), 2016/04/25 21:48:35]

The template parameter shouldn't be necessary here.

[shalamov, 2016/04/26 10:17:32]

Done.

+      base::Bind(&device::NFCImpl::Create));
+
   if (!frame_mojo_shell_)
     frame_mojo_shell_.reset(new FrameMojoShell(this));