DevTools: report adding mutation event listener as a violations.

third_party/WebKit/Source/core/inspector/InspectorLogAgent.cpp

 // 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 "core/inspector/InspectorLogAgent.h"
 
 #include "bindings/core/v8/SourceLocation.h"
 #include "core/frame/PerformanceMonitor.h"
 #include "core/inspector/ConsoleMessage.h"
 #include "core/inspector/ConsoleMessageStorage.h"
@@ skipping 207 matching lines @@
                      lround(duration * 1000));
   ConsoleMessage* message = ConsoleMessage::Create(
       kViolationMessageSource, kVerboseMessageLevel, message_text);
   ConsoleMessageAdded(message);
 }
 
 void InspectorLogAgent::ReportGenericViolation(PerformanceMonitor::Violation,
                                                const String& text,
                                                double time,
                                                SourceLocation* location) {
-  location->TakeStackTrace();
   ConsoleMessage* message = ConsoleMessage::Create(
       kViolationMessageSource, kVerboseMessageLevel, text, location->Clone());
   ConsoleMessageAdded(message);
 };
 
 }  // namespace blink