The `--disable-renderer-backgrounding` command line switch only disables throttling for timers, there is currently no way to disable throttling of `requestAnimationFrame`.

Refs https://github.com/atom/electron/issues/4317#issuecomment-190990964.

atom/browser/api/atom_api_web_contents.cc
#include "atom/browser/api/atom_api_web_contents.h"
#include <set>
#include <string>
#include "atom/browser/api/atom_api_debugger.h"
#include "atom/browser/api/atom_api_session.h"
#include "atom/browser/api/atom_api_window.h"
#include "atom/browser/atom_browser_client.h"
#include "atom/browser/atom_browser_context.h"
#include "atom/browser/atom_browser_main_parts.h"
#include "atom/browser/native_window.h"
#include "atom/browser/web_contents_permission_helper.h"
#include "atom/browser/web_contents_preferences.h"
#include "atom/browser/web_view_guest_delegate.h"
#include "atom/common/api/api_messages.h"