Remove PasswordAuthenticationManager.java file that is no longer used.

chrome/android/java/src/org/chromium/chrome/browser/password_manager/PasswordAuthenticationManager.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.password_manager;
-
-import org.chromium.base.CalledByNative;
-import org.chromium.chrome.browser.Tab;
-
-/**
- * Allows embedders to authenticate the usage of passwords.
- */
-public class PasswordAuthenticationManager {
-
-    /**
-     * The delegate that allows embedders to control the authentication of passwords.
-     */
-    public interface PasswordAuthenticationDelegate {
-        /**
-         * @return Whether password authentication is enabled.
-         */
-        boolean isPasswordAuthenticationEnabled();
-
-        /**
-         * Requests password authentication be presented for the given tab.
-         * @param tab The tab containing the protected password.
-         * @param callback The callback to be triggered on authentication result.
-         */
-        void requestAuthentication(Tab tab, PasswordAuthenticationCallback callback);
-
-        /**
-         * @return The message to be displayed in the save password infobar that will allow
-         *         the user to opt-in to additional password authentication.
-         */
-        String getPasswordProtectionString();
-    }
-
-    /**
-     * The callback to be triggered on success or failure of the password authentication.
-     */
-    public static class PasswordAuthenticationCallback {
-        private long mNativePtr;
-
-        @CalledByNative("PasswordAuthenticationCallback")
-        private static PasswordAuthenticationCallback create(long nativePtr) {
-            return new PasswordAuthenticationCallback(nativePtr);
-        }
-
-        private PasswordAuthenticationCallback(long nativePtr) {
-            mNativePtr = nativePtr;
-        }
-
-        /**
-         * Called upon authentication results to allow usage of the password or not.
-         * @param authenticated Whether the authentication was successful.
-         */
-        public final void onResult(boolean authenticated) {
-            if (mNativePtr == 0) {
-                assert false : "Can not call onResult more than once per callback.";
-                return;
-            }
-            nativeOnResult(mNativePtr, authenticated);
-            mNativePtr = 0;
-        }
-    }
-
-    private static class DefaultPasswordAuthenticationDelegate
-            implements PasswordAuthenticationDelegate {
-        @Override
-        public boolean isPasswordAuthenticationEnabled() {
-            return false;
-        }
-
-        @Override
-        public void requestAuthentication(Tab tab, PasswordAuthenticationCallback callback) {
-            callback.onResult(true);
-        }
-
-        @Override
-        public String getPasswordProtectionString() {
-            return "";
-        }
-    }
-
-    private static PasswordAuthenticationDelegate sDelegate;
-
-    private PasswordAuthenticationManager() {}
-
-    private static PasswordAuthenticationDelegate getDelegate() {
-        if (sDelegate == null) {
-            sDelegate = new DefaultPasswordAuthenticationDelegate();
-        }
-        return sDelegate;
-    }
-
-    /**
-     * Sets the password authentication delegate to be used.
-     */
-    public static void setDelegate(PasswordAuthenticationDelegate delegate) {
-        sDelegate = delegate;
-    }
-
-    /**
-     * @return Whether password authentication is enabled.
-     */
-    public static boolean isPasswordAuthenticationEnabled() {
-        return getDelegate().isPasswordAuthenticationEnabled();
-    }
-
-    /**
-     * Requests password authentication be presented for the given tab.
-     * @param tab The tab containing the protected password.
-     * @param callback The callback to be triggered on authentication result.
-     */
-    @CalledByNative
-    public static void requestAuthentication(
-            Tab tab, PasswordAuthenticationCallback callback) {
-        getDelegate().requestAuthentication(tab, callback);
-    }
-
-    /**
-     * @return The message to be displayed in the save password infobar that will allow the user
-     *         to opt-in to additional password authentication.
-     */
-    public static String getPasswordProtectionString() {
-        return getDelegate().getPasswordProtectionString();
-    }
-
-    private static native void nativeOnResult(long callbackPtr, boolean authenticated);
-}