Record data use of favicon

components/data_use_measurement/content/content_url_request_classifier.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 "components/data_use_measurement/content/content_url_request_classifier.h"
 
 #include <string>
 
 #include "base/metrics/histogram_macros.h"
 #include "base/metrics/sparse_histogram.h"
@@ skipping 138 matching lines @@
   STATIC_HISTOGRAM_POINTER_BLOCK(
       "DataUse.PageTransition.UserTraffic",
       AddCount(data_use_page_transition, received_bytes),
       base::LinearHistogram::FactoryGet(
           "DataUse.PageTransition.UserTraffic", 1,
           DataUsePageTransition::TRANSITION_MAX,
           DataUsePageTransition::TRANSITION_MAX + 1,
           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