Initialize debugger together with isolate.

third_party/WebKit/Source/platform/v8_inspector/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 137 matching lines @@
     var scripts = Debug.scripts();
     var contextDataPrefix = null;
     if (contextGroupId)
         contextDataPrefix = contextGroupId + ",";
     for (var i = 0; i < scripts.length; ++i) {
         var script = scripts[i];
         if (contextDataPrefix) {
             if (!script.context_data)
                 continue;
             // Context data is a string in the following format:
-            // <id>,<contextId>,("page"|"injected"|"worker")
+            // <contextGroupId>,<contextId>,("default"|"nondefault")
             if (script.context_data.indexOf(contextDataPrefix) !== 0)
                 continue;
         }
         result.push(DebuggerScript._formatScript(script));
     }
     return result;
 }
 
 /**
  * @param {!Script} script
@@ skipping 38 matching lines @@
         id: script.id,
         name: script.nameOrSourceURL(),
         sourceURL: script.source_url,
         sourceMappingURL: script.source_mapping_url,
         source: script.source,
         startLine: script.line_offset,
         startColumn: script.column_offset,
         endLine: endLine,
         endColumn: endColumn,
         executionContextId: executionContextId(),
-        isContentScript: !!script.context_data && script.context_data.endsWith(",injected"),
+        isContentScript: !!script.context_data && script.context_data.endsWith(",nondefault"),
         isInternalScript: script.is_debugger_script
     };
 }
 
 /**
  * @param {!ExecutionState} execState
  * @param {!BreakpointInfo} info
  * @return {string|undefined}
  */
 DebuggerScript.setBreakpoint = function(execState, info)
@@ skipping 453 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;
 })();