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 d40af5db29fda81a9a37ce1d7fa3802b607a4869..d3354c4515460bde55ac0acc7462c56288509a7f 100644
--- a/components/data_use_measurement/content/content_url_request_classifier.cc
+++ b/components/data_use_measurement/content/content_url_request_classifier.cc
@@ -156,4 +156,12 @@ void ContentURLRequestClassifier::RecordPageTransitionUMA(
           base::HistogramBase::kUmaTargetedHistogramFlag));
 }
 
+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