Expand net::CookieStore::ChangeCause::EXPLICIT for debugging.

chrome/browser/extensions/api/cookies/cookies_api.cc

Index: chrome/browser/extensions/api/cookies/cookies_api.cc
diff --git a/chrome/browser/extensions/api/cookies/cookies_api.cc b/chrome/browser/extensions/api/cookies/cookies_api.cc
index 549dd0e65510b6bd6226e9601c74280cd0071699..3eb2efb08a79b9122dc6bab4edc3617d6bb802d4 100644
--- a/chrome/browser/extensions/api/cookies/cookies_api.cc
+++ b/chrome/browser/extensions/api/cookies/cookies_api.cc
@@ -146,7 +146,10 @@ void CookiesEventRouter::CookieChanged(
     // Report an inserted cookie as an "explicit" change cause. All other causes
     // only make sense for deletions.
     case net::CookieStore::ChangeCause::INSERTED:
-    case net::CookieStore::ChangeCause::EXPLICIT:
+    case net::CookieStore::ChangeCause::EXPLICIT_DELETE:
+    case net::CookieStore::ChangeCause::EXPLICIT_DUPLICATE_IN_BACKING_STORE:
+    case net::CookieStore::ChangeCause::EXPLICIT_DONT_RECORD:
+    case net::CookieStore::ChangeCause::EXPLICIT_LAST_ENTRY:
       cause = keys::kExplicitChangeCause;
       break;