[Password Manager] Add UMA stats for custom passphrase users.

chrome/browser/password_manager/password_store_mac.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_PASSWORD_MANAGER_PASSWORD_STORE_MAC_H_
 #define CHROME_BROWSER_PASSWORD_MANAGER_PASSWORD_STORE_MAC_H_
 
 #include <vector>
 
 #include "base/callback_forward.h"
@@ skipping 19 matching lines @@
  public:
   // Takes ownership of |keychain| and |login_db|, both of which must be
   // non-NULL.
   PasswordStoreMac(
       scoped_refptr<base::SingleThreadTaskRunner> main_thread_runner,
       scoped_refptr<base::SingleThreadTaskRunner> db_thread_runner,
       crypto::AppleKeychain* keychain,
       password_manager::LoginDatabase* login_db);
 
   // Initializes |thread_|.
-  bool Init(const syncer::SyncableService::StartSyncFlare& flare,
-            const std::string& sync_username) override;
+  bool Init(const syncer::SyncableService::StartSyncFlare& flare) override;
 
   // Stops |thread_|.
   void Shutdown() override;
 
  protected:
   ~PasswordStoreMac() override;
 
   scoped_refptr<base::SingleThreadTaskRunner> GetBackgroundTaskRunner()
       override;
 
  private:
-  void ReportMetricsImpl(const std::string& sync_username) override;
+  void ReportMetricsImpl(const std::string& sync_username,
+                         bool custom_passphrase_sync_enabled) override;
   password_manager::PasswordStoreChangeList AddLoginImpl(
       const autofill::PasswordForm& form) override;
   password_manager::PasswordStoreChangeList UpdateLoginImpl(
       const autofill::PasswordForm& form) override;
   password_manager::PasswordStoreChangeList RemoveLoginImpl(
       const autofill::PasswordForm& form) override;
   password_manager::PasswordStoreChangeList RemoveLoginsCreatedBetweenImpl(
       base::Time delete_begin,
       base::Time delete_end) override;
   password_manager::PasswordStoreChangeList RemoveLoginsSyncedBetweenImpl(
@@ skipping 35 matching lines @@
   scoped_ptr<crypto::AppleKeychain> keychain_;
   scoped_ptr<password_manager::LoginDatabase> login_metadata_db_;
 
   // Thread that the synchronous methods are run on.
   scoped_ptr<base::Thread> thread_;
 
   DISALLOW_COPY_AND_ASSIGN(PasswordStoreMac);
 };
 
 #endif  // CHROME_BROWSER_PASSWORD_MANAGER_PASSWORD_STORE_MAC_H_