Introduce SourceLocation to be used for console messages.

third_party/WebKit/Source/core/frame/FrameConsole.cpp

 /*
  * Copyright (C) 2013 Apple 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 81 matching lines @@
 
     String stackTrace;
     if (consoleMessage->source() == ConsoleAPIMessageSource) {
         if (!frame().host() || (consoleMessage->scriptArguments() && !consoleMessage->scriptArguments()->argumentCount()))
             return;
         if (!allClientReportingMessageTypes().contains(consoleMessage->type()))
             return;
         if (frame().chromeClient().shouldReportDetailedMessageForSource(frame(), consoleMessage->url()))
             stackTrace = ScriptCallStack::capture()->toString();
     } else {
-        if (consoleMessage->callStack() && frame().chromeClient().shouldReportDetailedMessageForSource(frame(), consoleMessage->url()))
-            stackTrace = consoleMessage->callStack()->toString();
+        if (consoleMessage->stackTrace() && frame().chromeClient().shouldReportDetailedMessageForSource(frame(), consoleMessage->url()))
+            stackTrace = consoleMessage->stackTrace()->toString();
     }
 
     frame().chromeClient().addMessageToConsole(m_frame, consoleMessage->source(), consoleMessage->level(), consoleMessage->message(), consoleMessage->lineNumber(), consoleMessage->url(), stackTrace);
 }
 
 void FrameConsole::reportWorkerMessage(ConsoleMessage* consoleMessage)
 {
     reportMessageToClient(consoleMessage);
 }
 
@@ skipping 56 matching lines @@
     ConsoleMessage* consoleMessage = ConsoleMessage::createForRequest(NetworkMessageSource, ErrorMessageLevel, message.toString(), error.failingURL(), requestIdentifier);
     storage->reportMessage(m_frame->document(), consoleMessage);
 }
 
 DEFINE_TRACE(FrameConsole)
 {
     visitor->trace(m_frame);
 }
 
 } // namespace blink