/// <summary>
        /// Called immediately before the V8 context for a frame is released. No
        /// references to the context should be kept after this function is
        /// called.
        /// </summary>
        private void on_context_released(cef_v8context_handler_t* self, cef_browser_t* browser, cef_frame_t* frame, cef_v8context_t* context)
        {
            ThrowIfObjectDisposed();

            var m_browser = CefBrowser.From(browser);
            var m_frame = CefFrame.From(frame);
            var m_context = CefV8Context.From(context);

            this.OnContextReleased(m_browser, m_frame, m_context);
        }
        /// <summary>
        /// Called for global uncaught exceptions. Execution of this callback is
        /// disabled by default. To enable set
        /// CefSettings.uncaught_exception_stack_size &gt; 0.
        /// </summary>
        private void on_uncaught_exception(cef_v8context_handler_t* self, cef_browser_t* browser, cef_frame_t* frame, cef_v8context_t* context, cef_v8exception_t* exception, cef_v8stack_trace_t* stackTrace)
        {
            ThrowIfObjectDisposed();

            var m_browser = CefBrowser.From(browser);
            var m_frame = CefFrame.From(frame);
            var m_context = CefV8Context.From(context);
            var m_exception = CefV8Exception.From(exception);
            var m_stackTrace = CefV8StackTrace.From(stackTrace);

            this.OnUncaughtException(m_browser, m_frame, m_context, m_exception, m_stackTrace);
        }