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

Source/bindings/core/v8/ScriptDebugServer.cpp

 /*
  * Copyright (c) 2010-2011 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 299 matching lines @@
 {
     ASSERT(isPaused());
     ASSERT(!m_executionState.IsEmpty());
     v8::Handle<v8::Value> argv[] = { m_executionState };
     v8::Handle<v8::Value> result = callDebuggerMethod("frameCount", WTF_ARRAY_LENGTH(argv), argv);
     if (result->IsInt32())
         return result->Int32Value();
     return 0;
 }
 
-PassRefPtrWillBeRawPtr<JavaScriptCallFrame> ScriptDebugServer::toJavaScriptCallFrame(const ScriptValue& value)
+PassRefPtrWillBeRawPtr<JavaScriptCallFrame> ScriptDebugServer::toJavaScriptCallFrameUnsafe(const ScriptValue& value)
 {
     if (value.isEmpty())
         return nullptr;
     ASSERT(value.isObject());
-    return V8JavaScriptCallFrame::toNative(v8::Handle<v8::Object>::Cast(value.v8Value()));
+    return V8JavaScriptCallFrame::toNative(v8::Handle<v8::Object>::Cast(value.v8ValueUnsafe()));
 }
 
 PassRefPtrWillBeRawPtr<JavaScriptCallFrame> ScriptDebugServer::wrapCallFrames(int maximumLimit, ScopeInfoDetails scopeDetails)
 {
     const int scopeBits = 2;
     COMPILE_ASSERT(NoScopes < (1 << scopeBits), not_enough_bits_to_encode_ScopeInfoDetails);
 
     ASSERT(maximumLimit >= 0);
     int data = (maximumLimit << scopeBits) | scopeDetails;
     v8::Handle<v8::Value> currentCallFrameV8;
@@ skipping 338 matching lines @@
 {
     return PassOwnPtr<ScriptSourceCode>();
 }
 
 String ScriptDebugServer::preprocessEventListener(LocalFrame*, const String& source, const String& url, const String& functionName)
 {
     return source;
 }
 
 } // namespace blink