Removed unused methods from |HashPasswordManager|.

Change-Id: I1f98814ebec6acc2114d536b7daec93ebbab107e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1824269Reviewed-by: Vadym Doroshenko <dvadym@chromium.org>
Commit-Queue: Matthias Körber <koerber@google.com>
Cr-Commit-Position: refs/heads/master@{#699751}

components/password_manager/core/browser/hash_password_manager.cc

@@ -295,16 +295,6 @@ std::unique_ptr<StateSubscription> HashPasswordManager::RegisterStateCallback(
   return state_callback_list_.Add(callback);
 }
 
-bool HashPasswordManager::EncryptAndSaveToPrefs(const std::string& pref_name,
-                                                const std::string& s) {
-  std::string encrypted_base64_text = EncryptString(s);
-  if (encrypted_base64_text.empty())
-    return false;
-
-  prefs_->SetString(pref_name, encrypted_base64_text);
-  return true;
-}
-
 bool HashPasswordManager::EncryptAndSave(
     const PasswordHashData& password_hash_data) {
   if (!prefs_ || password_hash_data.username.empty()) {
@@ -366,11 +356,4 @@ bool HashPasswordManager::EncryptAndSave(
   return true;
 }
 
-std::string HashPasswordManager::RetrievedDecryptedStringFromPrefs(
-    const std::string& pref_name) {
-  DCHECK(prefs_);
-  std::string encrypted_base64_text = prefs_->GetString(pref_name);
-  return DecryptBase64String(encrypted_base64_text);
-}
-
 }  // namespace password_manager

components/password_manager/core/browser/hash_password_manager.h

@@ -62,18 +62,9 @@ class HashPasswordManager {
       const base::Callback<void(const std::string& username)>& callback);
 
  private:
-  // Saves encrypted string |s| in a preference |pref_name|. Returns true on
-  // success.
-  bool EncryptAndSaveToPrefs(const std::string& pref_name,
-                             const std::string& s);
-
   // Encrypts and saves |password_hash_data| to prefs. Returns true on success.
   bool EncryptAndSave(const PasswordHashData& password_hash_data);
 
-  // Retrieves and decrypts string value from a preference |pref_name|. Returns
-  // an empty string on failure.
-  std::string RetrievedDecryptedStringFromPrefs(const std::string& pref_name);
-
   PrefService* prefs_ = nullptr;
 
   // Callbacks when |kPasswordHashDataList| might have changed.