void WebContents::ExitFullscreenModeForTab(content::WebContents* source) {
  CommonWebContentsDelegate::ExitFullscreenModeForTab(source);
  Emit("leave-html-full-screen");
}
void WebContents::ExitFullscreenModeForTab(content::WebContents* source) {
  CommonWebContentsDelegate::ExitFullscreenModeForTab(source);
  Emit("leave-html-full-screen");
}