Remove GetMetadata from PhysicalWebDataSource and PhysicalWebScanner

components/physical_web/data_source/physical_web_data_source_impl_unittest.cc

Index: components/physical_web/data_source/physical_web_data_source_impl_unittest.cc
diff --git a/components/physical_web/data_source/physical_web_data_source_impl_unittest.cc b/components/physical_web/data_source/physical_web_data_source_impl_unittest.cc
index ddf30bc4542c00d20aaca6c8343bbfd8cbb4378e..49ebcccd98e72f939e7018f4000af7f09a259b0c 100644
--- a/components/physical_web/data_source/physical_web_data_source_impl_unittest.cc
+++ b/components/physical_web/data_source/physical_web_data_source_impl_unittest.cc
@@ -22,7 +22,6 @@ class TestPhysicalWebDataSource : public PhysicalWebDataSourceImpl {
 
   void StartDiscovery(bool network_request_enabled) override;
   void StopDiscovery() override;
-  std::unique_ptr<base::ListValue> GetMetadata() override;
   std::unique_ptr<MetadataList> GetMetadataList() override;
   bool HasUnresolvedDiscoveries() override;
 };
@@ -30,10 +29,6 @@ void TestPhysicalWebDataSource::StartDiscovery(bool network_request_enabled) {}
 
 void TestPhysicalWebDataSource::StopDiscovery() {}
 
-std::unique_ptr<base::ListValue> TestPhysicalWebDataSource::GetMetadata() {
-  return NULL;
-}
-
 std::unique_ptr<MetadataList> TestPhysicalWebDataSource::GetMetadataList() {
   return NULL;
 }