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### Issue Details
Electron Version: All Version
Operating System: macOS 10.15.3
Last Known Working Electron version: Never

### Bug
The color picker in devtools does not work.
In devtools if you want to change the colors of the CSS code. When you click on a color a color picker is supposed to appear but it does not appear.

### Screenshots
<img width="1013" alt="Capture d’écran 2020-09-07 à 11 42 44" src="https://user-images.githubusercontent.com/70572698/92374841-988ea280-f100-11ea-96be-afc93f6dd645.png">

shell/browser/api/electron_api_web_contents.cc
return ontents()->IsCrashed();
}
void WebContents::ForcefullyCrashRenderer() {
  content::RenderWidgetHostView* view =
      ontents()->GetRenderWidgetHostView();
  if (!view)
    return;
  content::RenderWidgetHost* rwh = view->GetRenderWidgetHost();
  if (!rwh)
    return;
  content::RenderProcessHost* rph = rwh->GetProcess();
  if (rph) {
#if defined(OS_LINUX) || defined(OS_CHROMEOS)
     A generic |CrashDumpHungChildProcess()| is not implemented for Linux.
     Instead we send an explicit IPC to crash on the renderer's IO thread.
    rph->ForceCrash();
#else
     Try to generate a crash report for the hung process.
#ifndef MAS_BUILD
    CrashDumpHungChildProcess(rph->GetProcess().Handle());
#endif
    rph->Shutdown(content::RESULT_CODE_HUNG);
#endif
  }
}
void WebContents::SetUserAgent(const std::string& user_agent) {