Support merged Dart-JS callstacks

Source/bindings/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 333 matching lines @@
 
     var funcObject = frameDetails.func();
     var sourcePosition;
     // FIXMEDART: if added purely for Dart.
     if (frameDetails.sourcePosition) {
         sourcePosition = frameDetails.sourcePosition();
     }
     var thisObject = frameDetails.receiver();
 
     var isAtReturn = !!frameDetails.isAtReturn();
+    var cachedFramePointer = frameDetails.framePointer();
     var returnValue = isAtReturn ? frameDetails.returnValue() : undefined;
 
     var scopeMirrors = (scopeDetailsLevel === DebuggerScript.ScopeInfoDetails.NoScopes ? [] : frameMirror.allScopes(scopeDetailsLevel === DebuggerScript.ScopeInfoDetails.FastAsyncScopes));
     var scopeTypes = new Array(scopeMirrors.length);
     var scopeObjects = new Array(scopeMirrors.length);
     for (var i = 0; i < scopeMirrors.length; ++i) {
         var scopeDetails = scopeMirrors[i].details();
         scopeTypes[i] = scopeDetails.type();
         scopeObjects[i] = scopeDetails.object();
     }
@@ skipping 63 matching lines @@
     function sourceID()
     {
         // FIXMEDART: remove caching when Dart devtools refactor CL lands.
         if (!scriptId) {
         var script = ensureFuncMirror().script();
         scriptId = script && script.id();
         }
         return scriptId;
     }
 
+    function framePointer() {
+        return cachedFramePointer;
+    }
+
     function functionName()
     {
         // FIXMEDART: remove caching when Dart devtools refactor CL lands.
         if (!functionNameCache) {
         var func = ensureFuncMirror();
         if (!func.resolved())
             return undefined;
         var displayName;
         var valueMirror = func.property("displayName").value();
         if (valueMirror && valueMirror.isString())
@@ skipping 47 matching lines @@
         "functionName": functionName,
         "thisObject": thisObject,
         "scopeChain": lazyScopeChain,
         "scopeType": scopeTypes,
         "evaluate": evaluate,
         "caller": callerFrame,
         "restart": restart,
         "setVariableValue": setVariableValue,
         "stepInPositions": stepInPositions,
         "isAtReturn": isAtReturn,
+        "framePointer": framePointer,
         "returnValue": returnValue
     };
 }
 
 DebuggerScript._buildScopeObject = function(scopeType, scopeObject)
 {
     var result;
     switch (scopeType) {
     case ScopeType.Local:
     case ScopeType.Closure:
@@ skipping 20 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;
 })();