Instrumenting URLMatcher matchers rebuilding

components/url_matcher/url_matcher.cc

 // Copyright 2013 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/url_matcher/url_matcher.h"
 
 #include <algorithm>
 #include <iterator>
 
 #include "base/logging.h"
+#include "base/profiler/scoped_profile.h"
 #include "url/gurl.h"
 #include "url/url_canon.h"
 
 namespace url_matcher {
 
 // This set of classes implement a mapping of URL Component Patterns, such as
 // host_prefix, host_suffix, host_equals, ..., etc., to StringPatterns
 // for use in substring comparisons.
 //
 // The idea of this mapping is to reduce the problem of comparing many
@@ skipping 1053 matching lines @@
              query_condition_iter = query_conditions.begin();
          query_condition_iter != query_conditions.end();
          ++query_condition_iter) {
       used_patterns.insert(query_condition_iter->string_pattern()->id());
     }
   }
   condition_factory_.ForgetUnusedPatterns(used_patterns);
 }
 
 void URLMatcher::UpdateInternalDatastructures() {
+  // TODO(vadimt): Remove ScopedProfile below once crbug.com/417106 is fixed.
+  tracked_objects::ScopedProfile tracking_profile(
+      FROM_HERE_WITH_EXPLICIT_FUNCTION(
+          "URLMatcher_UpdateInternalDatastructures"));
   UpdateSubstringSetMatcher(false);
   UpdateSubstringSetMatcher(true);
   UpdateRegexSetMatcher();
   UpdateTriggers();
   UpdateConditionFactory();
 }
 
 }  // namespace url_matcher