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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/ui/inspectable_web_contents_delegate.h
public:
  virtual ~InspectableWebContentsDelegate() {}
  
  virtual void DevToolsReloadPage() {}
  virtual void DevToolsSaveToFile(const std::string& url,
                                  const std::string& content,
                                  bool save_as) {}
  virtual void DevToolsAppendToFile(const std::string& url,
                                    const std::string& content) {}
  virtual void DevToolsRequestFileSystems() {}
  virtual void DevToolsAddFileSystem(const std::string& type,
                                     const base::FilePath& file_system_path) {}
  virtual void DevToolsRemoveFileSystem(
      const base::FilePath& file_system_path) {}
  virtual void DevToolsIndexPath(int request_id,
                                 const std::string& file_system_path,
                                 const std::string& excluded_folders) {}
  virtual void DevToolsStopIndexing(int request_id) {}
  virtual void DevToolsSearchInPath(int request_id,
                                    const std::string& file_system_path,
                                    const std::string& query) {}
};
}  
#endif