Remove support for special "sign in process" state.

extensions/browser/api/web_request/web_request_permissions.cc

Index: extensions/browser/api/web_request/web_request_permissions.cc
diff --git a/extensions/browser/api/web_request/web_request_permissions.cc b/extensions/browser/api/web_request/web_request_permissions.cc
index 297fef5e66b36d167d42a9a7097e6fe793710065..ea46307363af3db733db943453a758bbc5c9b4e3 100644
--- a/extensions/browser/api/web_request/web_request_permissions.cc
+++ b/extensions/browser/api/web_request/web_request_permissions.cc
@@ -88,10 +88,9 @@ bool WebRequestPermissions::HideRequest(
     if (extensions::WebViewRendererState::GetInstance()->IsGuest(process_id))
       return false;
 
-    if (extension_info_map && (
-        extension_info_map->IsSigninProcess(process_id) ||
-        extension_info_map->process_map().Contains(
-            extensions::kWebStoreAppId, process_id))) {
+    if (extension_info_map &&
+        extension_info_map->process_map().Contains(extensions::kWebStoreAppId,
+                                                   process_id)) {
       return true;
     }
   }