DevTools: Fix framework blackboxing for exceptions thrown inside V8 internal scripts.

Source/bindings/core/v8/DebuggerScript.js

 /*
  * 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 210 matching lines @@
     if (maximumLimit && maximumLimit < frameCount)
         frameCount = maximumLimit;
     var topFrame = undefined;
     for (var i = frameCount - 1; i >= 0; i--) {
         var frameMirror = execState.frame(i);
         topFrame = DebuggerScript._frameMirrorToJSCallFrame(frameMirror, topFrame, scopeDetailsLevel);
     }
     return topFrame;
 }
 
+DebuggerScript.currentCallFrameByIndex = function(execState, index)
+{
+    if (index < 0)
+        return undefined;
+    var frameCount = execState.frameCount();
+    if (index >= frameCount)
+        return undefined;
+    return DebuggerScript._frameMirrorToJSCallFrame(execState.frame(index), undefined, DebuggerScript.ScopeInfoDetails.NoScopes);
+}
+
 DebuggerScript.stepIntoStatement = function(execState)
 {
     execState.prepareStep(Debug.StepAction.StepIn, 1);
 }
 
 DebuggerScript.stepOverStatement = function(execState, callFrame)
 {
     execState.prepareStep(Debug.StepAction.StepNext, 1);
 }
 
@@ skipping 265 matching lines @@
         break;
     }
     return result;
 }
 
 // We never resolve Mirror by its handle so to avoid memory leaks caused by Mirrors in the cache we disable it.
 ToggleMirrorCache(false);
 
 return DebuggerScript;
 })();