Refactor CredentialManagerImpl::Get. It should use PasswordStore::GetLogins().

ios/chrome/browser/passwords/credential_manager.h

 // Copyright 2015 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 IOS_CHROME_BROWSER_PASSWORDS_CREDENTIAL_MANAGER_H_
 #define IOS_CHROME_BROWSER_PASSWORDS_CREDENTIAL_MANAGER_H_
 
 #include <memory>
 #include <string>
 #include <vector>
@@ skipping 46 matching lines @@
   // password_manager::CredentialManagerPendingRequestTaskDelegate:
   bool IsZeroClickAllowed() const override;
   GURL GetOrigin() const override;
   void SendCredential(
       const password_manager::SendCredentialCallback& send_callback,
       const password_manager::CredentialInfo& credential) override;
   void SendPasswordForm(
       const password_manager::SendCredentialCallback& send_callback,
       const autofill::PasswordForm* form) override;
   password_manager::PasswordManagerClient* client() const override;
-  password_manager::PasswordStore::FormDigest GetSynthesizedFormForOrigin()
-      const override;
 
   // password_manager::CredentialManagerPendingRequireUserMediationTaskDelegate:
   password_manager::PasswordStore* GetPasswordStore() override;
   void DoneRequiringUserMediation() override;
 
   // CredentialManagerPasswordFormManagerDelegate:
   void OnProvisionalSaveComplete() override;
 
  private:
   // The errors that can cause a request to fail.
@@ skipping 51 matching lines @@
   // Whether zero-click sign-in is enabled.
   BooleanPrefMember zero_click_sign_in_enabled_;
 
   // Weak pointer factory for asynchronously resolving requests.
   base::WeakPtrFactory<CredentialManager> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(CredentialManager);
 };
 
 #endif  // IOS_CHROME_BROWSER_PASSWORDS_CREDENTIAL_MANAGER_H_