Add foundation for trimming the AffiliationDatabase.

components/password_manager/core/browser/password_store.cc

Index: components/password_manager/core/browser/password_store.cc
diff --git a/components/password_manager/core/browser/password_store.cc b/components/password_manager/core/browser/password_store.cc
index 5b13a3cb86e2f294dc3ac95555d326abdf738cae..c242ecb3845fdb109a4b1fde503db7a2bebf4c95 100644
--- a/components/password_manager/core/browser/password_store.cc
+++ b/components/password_manager/core/browser/password_store.cc
@@ -97,10 +97,12 @@ void PasswordStore::RemoveLogin(const PasswordForm& form) {
   ScheduleTask(base::Bind(&PasswordStore::RemoveLoginInternal, this, form));
 }
 
-void PasswordStore::RemoveLoginsCreatedBetween(base::Time delete_begin,
-                                               base::Time delete_end) {
+void PasswordStore::RemoveLoginsCreatedBetween(
+    base::Time delete_begin,
+    base::Time delete_end,
+    const base::Closure& completion) {
   ScheduleTask(base::Bind(&PasswordStore::RemoveLoginsCreatedBetweenInternal,
-                          this, delete_begin, delete_end));
+                          this, delete_begin, delete_end, completion));
 }
 
 void PasswordStore::RemoveLoginsSyncedBetween(base::Time delete_begin,
@@ -109,6 +111,11 @@ void PasswordStore::RemoveLoginsSyncedBetween(base::Time delete_begin,
                           this, delete_begin, delete_end));
 }
 
+void PasswordStore::TrimAffiliationCache() {
+  if (affiliated_match_helper_)

[vasilii, 2015/04/23 13:16:35]

Should it be a DCHECK()?

+    affiliated_match_helper_->TrimAffiliationCache();
+}
+
 void PasswordStore::GetLogins(const PasswordForm& form,
                               AuthorizationPromptPolicy prompt_policy,
                               PasswordStoreConsumer* consumer) {
@@ -288,11 +295,15 @@ void PasswordStore::RemoveLoginInternal(const PasswordForm& form) {
   NotifyLoginsChanged(changes);
 }
 
-void PasswordStore::RemoveLoginsCreatedBetweenInternal(base::Time delete_begin,
-                                                       base::Time delete_end) {
+void PasswordStore::RemoveLoginsCreatedBetweenInternal(
+    base::Time delete_begin,
+    base::Time delete_end,
+    const base::Closure& completion) {
   PasswordStoreChangeList changes =
       RemoveLoginsCreatedBetweenImpl(delete_begin, delete_end);
   NotifyLoginsChanged(changes);
+  if (!completion.is_null())
+    main_thread_runner_->PostTask(FROM_HERE, completion);
 }
 
 void PasswordStore::RemoveLoginsSyncedBetweenInternal(base::Time delete_begin,