Remove Password Authentication code that is no longer used.

chrome/android/java/src/org/chromium/chrome/browser/infobar/SavePasswordInfoBar.java

-// Copyright 2014 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.
-
-package org.chromium.chrome.browser.infobar;
-
-import android.widget.CheckBox;
-
-import org.chromium.chrome.browser.password_manager.PasswordAuthenticationManager;
-
-/**
- * The infobar that allows saving passwords for autofill.
- */
-public class SavePasswordInfoBar extends ConfirmInfoBar {
-
-    private final SavePasswordInfoBarDelegate mDelegate;
-    private final long mNativeInfoBar;
-    private CheckBox mUseAdditionalAuthenticationCheckbox;
-
-    public SavePasswordInfoBar(long nativeInfoBar, SavePasswordInfoBarDelegate delegate,
-            int iconDrawableId, String message, String primaryButtonText,
-            String secondaryButtonText) {
-        super(nativeInfoBar, null, iconDrawableId, message,
-                null, primaryButtonText, secondaryButtonText);
-        mNativeInfoBar = nativeInfoBar;
-        mDelegate = delegate;
-    }
-
-    @Override
-    public void createContent(InfoBarLayout layout) {
-        if (PasswordAuthenticationManager.isPasswordAuthenticationEnabled()) {
-            mUseAdditionalAuthenticationCheckbox = new CheckBox(getContext());
-            mUseAdditionalAuthenticationCheckbox.setText(
-                    PasswordAuthenticationManager.getPasswordProtectionString());
-            layout.setCustomContent(mUseAdditionalAuthenticationCheckbox);
-        }
-
-        super.createContent(layout);
-    }
-
-    @Override
-    public void onButtonClicked(boolean isPrimaryButton) {
-        if (isPrimaryButton && mUseAdditionalAuthenticationCheckbox != null
-                && mUseAdditionalAuthenticationCheckbox.isChecked()) {
-            mDelegate.setUseAdditionalAuthentication(mNativeInfoBar, true);
-        }
-        super.onButtonClicked(isPrimaryButton);
-    }
-}