[debugger] expose side-effect free evaluate to inspector.

src/inspector/debugger-script.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 445 matching lines @@
     {
         var mirror = ensureFuncMirror();
         var context = mirror.context();
         if (context && context.data())
             return Number(context.data());
         return 0;
     }
 
     /**
      * @param {string} expression
+     * @param {boolean} allowSideEffect
      * @return {*}
      */
-    function evaluate(expression)
+    function evaluate(expression, allowSideEffect)
     {
-        return frameMirror.evaluate(expression).value();
+        return frameMirror.evaluate(expression, allowSideEffect).value();
     }
 
     /** @return {undefined} */
     function restart()
     {
         return frameMirror.restart();
     }
 
     /**
      * @param {number} scopeNumber
@@ skipping 59 matching lines @@
     case ScopeType.Global:
     case ScopeType.With:
         result = scopeObject;
         break;
     }
     return result;
 }
 
 return DebuggerScript;
 })();