Fix toV8 and ExceptionState with empty context.

Source/bindings/v8/ScriptDebugServer.cpp

Index: Source/bindings/v8/ScriptDebugServer.cpp
diff --git a/Source/bindings/v8/ScriptDebugServer.cpp b/Source/bindings/v8/ScriptDebugServer.cpp
index 8c0088da7d3f7025d28198374a2eea67d194d966..90bd9e014304e7bba9a3a582961899d3e503a0e1 100644
--- a/Source/bindings/v8/ScriptDebugServer.cpp
+++ b/Source/bindings/v8/ScriptDebugServer.cpp
@@ -347,7 +347,7 @@ ScriptValue ScriptDebugServer::currentCallFramesInner(ScopeInfoDetails scopeDeta
         return ScriptValue();
 
     v8::Context::Scope contextScope(pausedContext);
-    return ScriptValue(ScriptState::from(pausedContext), toV8(currentCallFrame.release(), v8::Handle<v8::Object>(), pausedContext->GetIsolate()));
+    return ScriptValue(ScriptState::from(pausedContext), toV8(currentCallFrame.release(), pausedContext->Global(), pausedContext->GetIsolate()));
 }
 
 ScriptValue ScriptDebugServer::currentCallFrames()