Record the tab state during data use

components/data_use_measurement/core/data_use_network_delegate_unittest.cc

Index: components/data_use_measurement/core/data_use_network_delegate_unittest.cc
diff --git a/components/data_use_measurement/core/data_use_network_delegate_unittest.cc b/components/data_use_measurement/core/data_use_network_delegate_unittest.cc
index a7a82d3e6a66684dab1e78471a8c3dd64774a6db..c87807a5b3300ab633e46b523e65714c36a412a3 100644
--- a/components/data_use_measurement/core/data_use_network_delegate_unittest.cc
+++ b/components/data_use_measurement/core/data_use_network_delegate_unittest.cc
@@ -42,6 +42,10 @@ class TestDataUseAscriber : public DataUseAscriber {
                                       bool can_create_new) override {
     return nullptr;
   }
+  const DataUseRecorder* GetDataUseRecorderIfExists(
+      const net::URLRequest* request) const override {
+    return nullptr;
+  }
 
   std::unique_ptr<URLRequestClassifier> CreateURLRequestClassifier()
       const override {