[Device Service] Decouple NFC implementation from //content

content/browser/web_contents/web_contents_impl.h

Index: content/browser/web_contents/web_contents_impl.h
diff --git a/content/browser/web_contents/web_contents_impl.h b/content/browser/web_contents/web_contents_impl.h
index b0468b48b22d6b2b1a23baaa938129c1b882cfe1..91efdedd599c7cef4933ddf6e89c07b5d1dddeb4 100644
--- a/content/browser/web_contents/web_contents_impl.h
+++ b/content/browser/web_contents/web_contents_impl.h
@@ -28,6 +28,7 @@
 #include "content/browser/frame_host/render_frame_host_delegate.h"
 #include "content/browser/frame_host/render_frame_host_manager.h"
 #include "content/browser/media/audio_stream_monitor.h"
+#include "content/browser/nfc/nfc_host.h"
 #include "content/browser/renderer_host/render_view_host_delegate.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_delegate.h"
@@ -507,6 +508,7 @@ class CONTENT_EXPORT WebContentsImpl
       int browser_plugin_instance_id) override;
   device::GeolocationServiceContext* GetGeolocationServiceContext() override;
   device::mojom::WakeLockContext* GetWakeLockServiceContext() override;
+  void GetNFC(device::nfc::mojom::NFCRequest request) override;
   void EnterFullscreenMode(const GURL& origin) override;
   void ExitFullscreenMode(bool will_cause_resize) override;
   bool ShouldRouteMessageEvent(
@@ -1509,6 +1511,8 @@ class CONTENT_EXPORT WebContentsImpl
 
   std::unique_ptr<WakeLockContextHost> wake_lock_context_host_;
 
+  std::unique_ptr<NFCHost> nfc_host_;
+
   std::unique_ptr<ScreenOrientationProvider> screen_orientation_provider_;
 
   std::unique_ptr<ManifestManagerHost> manifest_manager_host_;