Remove GetMetadata from PhysicalWebDataSource and PhysicalWebScanner

components/physical_web/data_source/physical_web_data_source_impl_unittest.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/values.h"
 #include "components/physical_web/data_source/physical_web_data_source_impl.h"
 #include "components/physical_web/data_source/physical_web_listener.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "url/gurl.h"
 
 namespace physical_web {
 
 // Test Values ----------------------------------------------------------------
 GURL kUrl = GURL("https://www.google.com");
 
 // TestPhysicalWebDataSource --------------------------------------------------
 
 class TestPhysicalWebDataSource : public PhysicalWebDataSourceImpl {
  public:
   TestPhysicalWebDataSource() {}
   ~TestPhysicalWebDataSource() override {}
 
   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;
 };
 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;
 }
 
 bool TestPhysicalWebDataSource::HasUnresolvedDiscoveries() {
   return false;
 }
 
 // TestPhysicalWebListener ----------------------------------------------------
 
@@ skipping 107 matching lines @@
 TEST_F(PhysicalWebDataSourceImplTest, OnDistanceChangedNotRegistered) {
   data_source_.UnregisterListener(&listener_);
   data_source_.NotifyOnDistanceChanged(kUrl, 0.0);
   EXPECT_FALSE(listener_.OnFoundNotified());
   EXPECT_FALSE(listener_.OnLostNotified());
   EXPECT_FALSE(listener_.OnDistanceChangedNotified());
   EXPECT_TRUE(listener_.LastEventUrl().is_empty());
 }
 
 }  // namespace physical_web