This function will fail and return false (0) if a previous call to
CefEndTracingAsync is already pending or if CefBeginTracing was not called.
|tracing_file| is the path at which tracing data will be written and
|callback| is the callback that will be executed once all processes have
sent their trace data. If |tracing_file| is NULL a new temporary file path
will be used. If |callback| is NULL no trace data will be written.
This function must be called on the browser process UI thread.
Stop tracing events on all processes.
This function will fail and return false (0) if a previous call to CefEndTracingAsync is already pending or if CefBeginTracing was not called.
|tracing_file| is the path at which tracing data will be written and |callback| is the callback that will be executed once all processes have sent their trace data. If |tracing_file| is NULL a new temporary file path will be used. If |callback| is NULL no trace data will be written.
This function must be called on the browser process UI thread.