Introduce SourceLocation to be used for console messages.

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

Index: third_party/WebKit/Source/core/frame/FrameConsole.cpp
diff --git a/third_party/WebKit/Source/core/frame/FrameConsole.cpp b/third_party/WebKit/Source/core/frame/FrameConsole.cpp
index 9b01a08f0c7d50690f0a7eec216bae7b1dfbce5c..30c89992cf507917b8cdf05dcde9afc0c7c61684 100644
--- a/third_party/WebKit/Source/core/frame/FrameConsole.cpp
+++ b/third_party/WebKit/Source/core/frame/FrameConsole.cpp
@@ -99,8 +99,8 @@ void FrameConsole::reportMessageToClient(ConsoleMessage* consoleMessage)
         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);