Remove support for the keygen tag

chrome/browser/chrome_content_browser_client.cc

Index: chrome/browser/chrome_content_browser_client.cc
diff --git a/chrome/browser/chrome_content_browser_client.cc b/chrome/browser/chrome_content_browser_client.cc
index 0acf00e95ff87db52eb55aaea3f4f5a51e42883b..7f3763bebfffb5bff09fd06e95c5c21affe3d4ce 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -2099,17 +2099,6 @@ bool ChromeContentBrowserClient::AllowWebRTCIdentityCache(
 }
 #endif  // BUILDFLAG(ENABLE_WEBRTC)
 
-bool ChromeContentBrowserClient::AllowKeygen(
-    const GURL& url,
-    content::ResourceContext* context) {
-  HostContentSettingsMap* content_settings =
-      ProfileIOData::FromResourceContext(context)->GetHostContentSettingsMap();
-
-  return content_settings->GetContentSetting(
-             url, url, CONTENT_SETTINGS_TYPE_KEYGEN, std::string()) ==
-         CONTENT_SETTING_ALLOW;
-}
-
 ChromeContentBrowserClient::AllowWebBluetoothResult
 ChromeContentBrowserClient::AllowWebBluetooth(
     content::BrowserContext* browser_context,