[Autofill Assistant] Remove unused file

Bug: 806868
Change-Id: Ia8700f880c820f05e4b231d2833db24d61c5484b
Reviewed-on: https://chromium-review.googlesource.com/c/1340951Reviewed-by: Mathias Carlen <mcarlen@chromium.org>
Commit-Queue: Ganggui Tang <gogerald@chromium.org>
Cr-Commit-Position: refs/heads/master@{#608986}

chrome/android/java/src/org/chromium/chrome/browser/autofill_assistant/InitScreenController.java

-// Copyright 2018 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.autofill_assistant;
-
-import org.chromium.base.ContextUtils;
-import org.chromium.chrome.browser.preferences.autofill_assistant.AutofillAssistantPreferences;
-
-/**
- * Init screen controller, responsible for starting the native autofill assistant after init has
- * been confirmed.
- */
-public class InitScreenController {
-    /**
-     * Name of the shared parameter entry keeping track of whether the
-     * first screen should be skipped on startup.
-     */
-    private static final String AUTOFILL_ASSISTANT_SKIP_INIT_SCREEN =
-            "AUTOFILL_ASSISTANT_SKIP_INIT_SCREEN";
-
-    public static boolean skip() {
-        return ContextUtils.getAppSharedPreferences().getBoolean(
-                AUTOFILL_ASSISTANT_SKIP_INIT_SCREEN, false);
-    }
-
-    private final AutofillAssistantUiDelegate.Client mClient;
-
-    /**
-     * Constructs an Init screen.
-     *
-     * @param activity The parent activity.
-     */
-    public InitScreenController(AutofillAssistantUiDelegate.Client client) {
-        mClient = client;
-    }
-
-    /**
-     * The main callback method providing the result of the init, and the status
-     * of the "don't show me again" checkbox.
-     */
-    public void onInitFinished(boolean initOk, boolean dontShowAgain) {
-        if (initOk) {
-            if (dontShowAgain) {
-                ContextUtils.getAppSharedPreferences()
-                        .edit()
-                        .putBoolean(AUTOFILL_ASSISTANT_SKIP_INIT_SCREEN, true)
-                        .apply();
-            }
-            mClient.onInitOk();
-            return;
-        } else {
-            mClient.onInitRejected();
-        }
-        if (dontShowAgain) {
-            ContextUtils.getAppSharedPreferences()
-                    .edit()
-                    .putBoolean(AutofillAssistantPreferences.PREF_AUTOFILL_ASSISTANT_SWITCH, false)
-                    .apply();
-        }
-    }
-}