Add foundation for trimming the AffiliationDatabase.

chrome/browser/password_manager/password_store_factory.cc

Index: chrome/browser/password_manager/password_store_factory.cc
diff --git a/chrome/browser/password_manager/password_store_factory.cc b/chrome/browser/password_manager/password_store_factory.cc
index 8e6408167eaeec1c4e810fb005223ec6c1acfcfe..13d0e74db4f6cda402aa6ea290e72352f36ce3f5 100644
--- a/chrome/browser/password_manager/password_store_factory.cc
+++ b/chrome/browser/password_manager/password_store_factory.cc
@@ -193,6 +193,21 @@ void PasswordStoreFactory::OnPasswordsSyncedStatePotentiallyChanged(
   }
 }
 
+// static
+void PasswordStoreFactory::TrimOrDeleteAffiliationCache(Profile* profile) {
+  scoped_refptr<PasswordStore> password_store =
+      GetForProfile(profile, ServiceAccessType::EXPLICIT_ACCESS);
+  if (password_store && password_store->HasAffiliatedMatchHelper()) {
+    password_store->TrimAffiliationCache();
+  } else {
+    scoped_refptr<base::SingleThreadTaskRunner> db_thread_runner(
+        content::BrowserThread::GetMessageLoopProxyForThread(
+            content::BrowserThread::DB));
+    password_manager::AffiliationService::DeleteCache(
+        GetAffiliationDatabasePath(profile), db_thread_runner.get());
+  }
+}
+
 PasswordStoreFactory::PasswordStoreFactory()
     : BrowserContextKeyedServiceFactory(
         "PasswordStore",