Remove GetMetadata from PhysicalWebDataSource and PhysicalWebScanner

components/physical_web/data_source/fake_physical_web_data_source.cc

Index: components/physical_web/data_source/fake_physical_web_data_source.cc
diff --git a/components/physical_web/data_source/fake_physical_web_data_source.cc b/components/physical_web/data_source/fake_physical_web_data_source.cc
index fb04e9f9e4148aed0bf6a049ba3963e62b143079..db5d4ff72180987badb48d4df0601d1bfad6ac1d 100644
--- a/components/physical_web/data_source/fake_physical_web_data_source.cc
+++ b/components/physical_web/data_source/fake_physical_web_data_source.cc
@@ -5,13 +5,9 @@
 #include "components/physical_web/data_source/fake_physical_web_data_source.h"
 
 #include "base/strings/string_number_conversions.h"
-#include "base/values.h"
 #include "components/physical_web/data_source/physical_web_listener.h"
 #include "url/gurl.h"
 
-using base::ListValue;
-using base::DictionaryValue;
-
 namespace physical_web {
 
 std::unique_ptr<Metadata> CreatePhysicalWebPage(
@@ -58,8 +54,7 @@ std::unique_ptr<MetadataList> CreateDummyPhysicalWebPages(
   return list;
 }
 
-FakePhysicalWebDataSource::FakePhysicalWebDataSource()
-    : metadata_(base::MakeUnique<base::ListValue>()) {}
+FakePhysicalWebDataSource::FakePhysicalWebDataSource() {}
 
 FakePhysicalWebDataSource::~FakePhysicalWebDataSource() = default;
 
@@ -71,10 +66,6 @@ void FakePhysicalWebDataSource::StopDiscovery() {
   // Ignored.
 }
 
-std::unique_ptr<base::ListValue> FakePhysicalWebDataSource::GetMetadata() {
-  return metadata_->CreateDeepCopy();
-}
-
 std::unique_ptr<MetadataList> FakePhysicalWebDataSource::GetMetadataList() {
   return base::MakeUnique<MetadataList>(*metadata_list_.get());
 }
@@ -93,11 +84,6 @@ void FakePhysicalWebDataSource::UnregisterListener(
   observer_list_.RemoveObserver(physical_web_listener);
 }
 
-void FakePhysicalWebDataSource::SetMetadata(
-    std::unique_ptr<ListValue> metadata) {
-  metadata_ = std::move(metadata);
-}
-
 void FakePhysicalWebDataSource::SetMetadataList(
     std::unique_ptr<MetadataList> metadata_list) {
   metadata_list_ = std::move(metadata_list);