Add task location information to ExecutionContext

Source/core/dom/StringCallback.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 15 matching lines @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "core/dom/StringCallback.h"
 
 #include "core/dom/ExecutionContext.h"
 #include "core/dom/ExecutionContextTask.h"
+#include "public/platform/WebTraceLocation.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 namespace {
 
 class DispatchCallbackTask final : public ExecutionContextTask {
 public:
     static PassOwnPtr<DispatchCallbackTask> create(StringCallback* callback, const String& data, const String& taskName)
     {
@@ skipping 20 matching lines @@
 
     Persistent<StringCallback> m_callback;
     const String m_data;
     const String m_taskName;
 };
 
 } // namespace
 
 void StringCallback::scheduleCallback(StringCallback* callback, ExecutionContext* context, const String& data, const String& instrumentationName)
 {
-    context->postTask(DispatchCallbackTask::create(callback, data, instrumentationName));
+    context->postTask(FROM_HERE, DispatchCallbackTask::create(callback, data, instrumentationName));
 }
 
 } // namespace blink