Support to remove passwords by date_synced timestamp.

chrome/browser/password_manager/password_store_x.h

Index: chrome/browser/password_manager/password_store_x.h
diff --git a/chrome/browser/password_manager/password_store_x.h b/chrome/browser/password_manager/password_store_x.h
index 585f64db75f1bf7b22efa815dbb3b4613543b8cc..edc2c4e9f302efc10708aa97db4cf5ab81036e8a 100644
--- a/chrome/browser/password_manager/password_store_x.h
+++ b/chrome/browser/password_manager/password_store_x.h
@@ -46,12 +46,21 @@ class PasswordStoreX : public password_manager::PasswordStoreDefault {
         const autofill::PasswordForm& form,
         password_manager::PasswordStoreChangeList* changes) = 0;
     virtual bool RemoveLogin(const autofill::PasswordForm& form) = 0;
-    virtual bool RemoveLoginsCreatedBetween(const base::Time& delete_begin,
-                                            const base::Time& delete_end) = 0;
+
+    // Removes all logins created/synced from |delete_begin| onwards (inclusive)
+    // and before |delete_end|. You may use a null Time value to do an unbounded
+    // delete in either direction.
+    virtual bool RemoveLoginsCreatedBetween(base::Time delete_begin,
+                                            base::Time delete_end) = 0;
+    virtual bool RemoveLoginsSyncedBetween(
+        base::Time delete_begin,
+        base::Time delete_end,
+        password_manager::PasswordStoreChangeList* changes) = 0;
+
     virtual bool GetLogins(const autofill::PasswordForm& form,
                            PasswordFormList* forms) = 0;
-    virtual bool GetLoginsCreatedBetween(const base::Time& get_begin,
-                                         const base::Time& get_end,
+    virtual bool GetLoginsCreatedBetween(base::Time get_begin,
+                                         base::Time get_end,
                                          PasswordFormList* forms) = 0;
     virtual bool GetAutofillableLogins(PasswordFormList* forms) = 0;
     virtual bool GetBlacklistLogins(PasswordFormList* forms) = 0;
@@ -79,6 +88,9 @@ class PasswordStoreX : public password_manager::PasswordStoreDefault {
   virtual password_manager::PasswordStoreChangeList
       RemoveLoginsCreatedBetweenImpl(const base::Time& delete_begin,
                                      const base::Time& delete_end) OVERRIDE;
+  virtual password_manager::PasswordStoreChangeList
+      RemoveLoginsSyncedBetweenImpl(base::Time delete_begin,
+                                    base::Time delete_end) OVERRIDE;
   virtual void GetLoginsImpl(
       const autofill::PasswordForm& form,
       AuthorizationPromptPolicy prompt_policy,