[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 21cd93efb16d4780f1bde064cb3b1da6ee725138..6f7d383ae9be776230a8b2e1e21da8c8c32735f6 100644
--- a/content/browser/web_contents/web_contents_impl.h
+++ b/content/browser/web_contents/web_contents_impl.h
@@ -53,6 +53,10 @@
 #include "ui/gfx/geometry/rect_f.h"
 #include "ui/gfx/geometry/size.h"
 
+#if defined(OS_ANDROID)
+#include "content/browser/android/nfc_host.h"
+#endif
+
 struct ViewHostMsg_DateTimeDialogValue_Params;
 
 namespace service_manager {
@@ -510,6 +514,9 @@ class CONTENT_EXPORT WebContentsImpl
   device::GeolocationServiceContext* GetGeolocationServiceContext() override;
   device::mojom::WakeLockContext* GetWakeLockContext() override;
   device::mojom::WakeLockService* GetRendererWakeLock() override;
+#if defined(OS_ANDROID)
+  void GetNFC(device::nfc::mojom::NFCRequest request) override;
+#endif
   void EnterFullscreenMode(const GURL& origin) override;
   void ExitFullscreenMode(bool will_cause_resize) override;
   bool ShouldRouteMessageEvent(
@@ -1516,6 +1523,10 @@ class CONTENT_EXPORT WebContentsImpl
 
   device::mojom::WakeLockServicePtr renderer_wake_lock_;
 
+#if defined(OS_ANDROID)
+  std::unique_ptr<NFCHost> nfc_host_;
+#endif
+
   std::unique_ptr<ScreenOrientationProvider> screen_orientation_provider_;
 
   std::unique_ptr<ManifestManagerHost> manifest_manager_host_;