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

Source/core/inspector/InspectorDebuggerAgent.cpp

Index: Source/core/inspector/InspectorDebuggerAgent.cpp
diff --git a/Source/core/inspector/InspectorDebuggerAgent.cpp b/Source/core/inspector/InspectorDebuggerAgent.cpp
index 1fa75ee4727694f4fbea9d6407a380e4f047ec6a..d21319ef213a422d3a9b0fab4dde43bdd3c7ca6c 100644
--- a/Source/core/inspector/InspectorDebuggerAgent.cpp
+++ b/Source/core/inspector/InspectorDebuggerAgent.cpp
@@ -1205,7 +1205,7 @@ PassRefPtrWillBeRawPtr<ScriptAsyncCallStack> InspectorDebuggerAgent::currentAsyn
         return nullptr;
     RefPtrWillBeRawPtr<ScriptAsyncCallStack> result = nullptr;
     for (AsyncCallStackTracker::AsyncCallStackVector::const_reverse_iterator it = callStacks.rbegin(); it != callStacks.rend(); ++it) {
-        RefPtrWillBeRawPtr<JavaScriptCallFrame> callFrame = ScriptDebugServer::toJavaScriptCallFrame((*it)->callFrames());
+        RefPtrWillBeRawPtr<JavaScriptCallFrame> callFrame = ScriptDebugServer::toJavaScriptCallFrameUnsafe((*it)->callFrames());
         if (!callFrame)
             break;
         result = ScriptAsyncCallStack::create((*it)->description(), toScriptCallStack(callFrame.get()), result.release());