Record data use of favicon

components/data_use_measurement/content/content_url_request_classifier.cc

Index: components/data_use_measurement/content/content_url_request_classifier.cc
diff --git a/components/data_use_measurement/content/content_url_request_classifier.cc b/components/data_use_measurement/content/content_url_request_classifier.cc
index 2c723b6968498b4b395e022a950f4b39d58fde34..f6d770720578793bc67d46de1c72e139f17e2922 100644
--- a/components/data_use_measurement/content/content_url_request_classifier.cc
+++ b/components/data_use_measurement/content/content_url_request_classifier.cc
@@ -67,4 +67,12 @@ DataUseUserData::DataUseContentType ContentURLRequestClassifier::GetContentType(
   return DataUseUserData::OTHER;
 }
 
+bool ContentURLRequestClassifier::IsFavIconRequest(
+    const net::URLRequest& request) const {
+  const content::ResourceRequestInfo* request_info =
+      content::ResourceRequestInfo::ForRequest(&request);
+  return request_info && request_info->GetResourceType() ==
+                             content::ResourceType::RESOURCE_TYPE_FAVICON;
+}
+
 }  // namespace data_use_measurement