Add ScriptValue.v8ValueUnsafe() to access the V8 value without cross-context access check.

Source/bindings/core/v8/ScriptDebugServer.h

 /*
  * 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 66 matching lines @@
     void stepIntoStatement();
     void stepOverStatement();
     void stepOutOfFunction();
 
     bool setScriptSource(const String& sourceID, const String& newContent, bool preview, String* error, RefPtr<TypeBuilder::Debugger::SetScriptSourceError>&, ScriptValue* newCallFrames, RefPtr<JSONObject>* result);
     ScriptValue currentCallFrames();
     ScriptValue currentCallFramesForAsyncStack();
     PassRefPtrWillBeRawPtr<JavaScriptCallFrame> topCallFrameNoScopes();
     int frameCount();
 
-    static PassRefPtrWillBeRawPtr<JavaScriptCallFrame> toJavaScriptCallFrame(const ScriptValue&);
+    static PassRefPtrWillBeRawPtr<JavaScriptCallFrame> toJavaScriptCallFrameUnsafe(const ScriptValue&);
 
     class Task {
     public:
         virtual ~Task() { }
         virtual void run() = 0;
     };
     static void interruptAndRun(PassOwnPtr<Task>, v8::Isolate*);
     void runPendingTasks();
 
     bool isPaused();
@@ skipping 56 matching lines @@
 
     void handleV8AsyncTaskEvent(ScriptDebugListener*, ScriptState* pausedScriptState, v8::Handle<v8::Object> executionState, v8::Handle<v8::Object> eventData);
 
     bool m_runningNestedMessageLoop;
 };
 
 } // namespace blink
 
 
 #endif // ScriptDebugServer_h