Removed unused methods from password_manager_util.

Change-Id: I1b9ac32e33d1e17f83e12887aa6782342e131a20
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1823863Reviewed-by: Vadym Doroshenko <dvadym@chromium.org>
Commit-Queue: Matthias Körber <koerber@google.com>
Cr-Commit-Position: refs/heads/master@{#699753}

components/password_manager/core/browser/password_manager_util.cc

@@ -97,37 +97,6 @@ bool IsSyncingWithNormalEncryption(const syncer::SyncService* sync_service) {
          password_manager::SYNCING_NORMAL_ENCRYPTION;
 }
 
-void FindDuplicates(std::vector<std::unique_ptr<PasswordForm>>* forms,
-                    std::vector<std::unique_ptr<PasswordForm>>* duplicates,
-                    std::vector<std::vector<PasswordForm*>>* tag_groups) {
-  if (forms->empty())
-    return;
-
-  // Linux backends used to treat the first form as a prime oneamong the
-  // duplicates. Therefore, the caller should try to preserve it.
-  std::stable_sort(forms->begin(), forms->end(), autofill::LessThanUniqueKey());
-
-  std::vector<std::unique_ptr<PasswordForm>> unique_forms;
-  unique_forms.push_back(std::move(forms->front()));
-  if (tag_groups) {
-    tag_groups->clear();
-    tag_groups->push_back(std::vector<PasswordForm*>());
-    tag_groups->front().push_back(unique_forms.front().get());
-  }
-  for (auto it = forms->begin() + 1; it != forms->end(); ++it) {
-    if (ArePasswordFormUniqueKeysEqual(**it, *unique_forms.back())) {
-      if (tag_groups)
-        tag_groups->back().push_back(it->get());
-      duplicates->push_back(std::move(*it));
-    } else {
-      if (tag_groups)
-        tag_groups->push_back(std::vector<PasswordForm*>(1, it->get()));
-      unique_forms.push_back(std::move(*it));
-    }
-  }
-  forms->swap(unique_forms);
-}
-
 void TrimUsernameOnlyCredentials(
     std::vector<std::unique_ptr<PasswordForm>>* android_credentials) {
   // Remove username-only credentials which are not federated.

components/password_manager/core/browser/password_manager_util.h

@@ -50,17 +50,6 @@ password_manager::SyncState GetPasswordSyncState(
 // custom passphrase.
 bool IsSyncingWithNormalEncryption(const syncer::SyncService* sync_service);
 
-// Finds the forms with a duplicate sync tags in |forms|. The first one of
-// the duplicated entries stays in |forms|, the others are moved to
-// |duplicates|.
-// |tag_groups| is optional. It will contain |forms| and |duplicates| grouped by
-// the sync tag. The first element in each group is one from |forms|. It's
-// followed by the duplicates.
-void FindDuplicates(
-    std::vector<std::unique_ptr<autofill::PasswordForm>>* forms,
-    std::vector<std::unique_ptr<autofill::PasswordForm>>* duplicates,
-    std::vector<std::vector<autofill::PasswordForm*>>* tag_groups);
-
 // Removes Android username-only credentials from |android_credentials|.
 // Transforms federated credentials into non zero-click ones.
 void TrimUsernameOnlyCredentials(