[Android] Refactor: move files to chrome/browser/notifications/channels

chrome/android/java/src/org/chromium/chrome/browser/notifications/ChannelDefinitions.java

Index: chrome/android/java/src/org/chromium/chrome/browser/notifications/ChannelDefinitions.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/notifications/ChannelDefinitions.java b/chrome/android/java/src/org/chromium/chrome/browser/notifications/ChannelDefinitions.java
deleted file mode 100644
index 8e66a2ebf3fc20aba09fb92935ddc9edb846c282..0000000000000000000000000000000000000000
--- a/chrome/android/java/src/org/chromium/chrome/browser/notifications/ChannelDefinitions.java
+++ /dev/null
@@ -1,167 +0,0 @@
-// Copyright 2017 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.notifications;
-
-import android.annotation.TargetApi;
-import android.app.NotificationManager;
-import android.os.Build;
-import android.support.annotation.StringDef;
-
-import java.lang.annotation.Retention;
-import java.lang.annotation.RetentionPolicy;
-import java.util.Collections;
-import java.util.HashMap;
-import java.util.Map;
-import java.util.Set;
-
-/**
- * Defines the properties of all notification channels we post notifications to in Android O+.
- *
- * PLEASE NOTE, notification channels appear in system UI and are persisted forever by Android,
- * so should not be added or removed lightly, and the proper deprecation and versioning steps must
- * be taken when doing so. Please read the comments and speak to one of this file's OWNERs when
- * adding/removing a channel.
- */
-public class ChannelDefinitions {
-    public static final String CHANNEL_ID_BROWSER = "browser";
-    public static final String CHANNEL_ID_DOWNLOADS = "downloads";
-    public static final String CHANNEL_ID_INCOGNITO = "incognito";
-    public static final String CHANNEL_ID_MEDIA = "media";
-    public static final String CHANNEL_ID_SITES = "sites";
-    static final String CHANNEL_GROUP_ID_GENERAL = "general";
-    /**
-     * Version number identifying the current set of channels. This must be incremented whenever
-     * the set of channels returned by {@link #getStartupChannelIds()} or
-     * {@link #getLegacyChannelIds()} changes.
-     */
-    static final int CHANNELS_VERSION = 0;
-
-    /**
-     * To define a new channel, add the channel ID to this StringDef and add a new entry to
-     * PredefinedChannels.MAP below with the appropriate channel parameters.
-     * To remove an existing channel, remove the ID from this StringDef, remove its entry from
-     * Predefined Channels.MAP, and add the ID to the LEGACY_CHANNELS_ID array below.
-     */
-    @StringDef({CHANNEL_ID_BROWSER, CHANNEL_ID_DOWNLOADS, CHANNEL_ID_INCOGNITO, CHANNEL_ID_MEDIA,
-            CHANNEL_ID_SITES})
-    @Retention(RetentionPolicy.SOURCE)
-    public @interface ChannelId {}
-
-    @StringDef({CHANNEL_GROUP_ID_GENERAL})
-    @Retention(RetentionPolicy.SOURCE)
-    @interface ChannelGroupId {}
-
-    // Map defined in static inner class so it's only initialized lazily.
-    @TargetApi(Build.VERSION_CODES.N) // for NotificationManager.IMPORTANCE_* constants
-    private static class PredefinedChannels {
-        /**
-         * The set of predefined channels to be initialized on startup. CHANNELS_VERSION must be
-         * incremented every time an entry is modified, removed or added to this map.
-         * If an entry is removed from here then it must be added to the LEGACY_CHANNEL_IDs array.
-         */
-        static final Map<String, Channel> MAP;
-        static {
-            Map<String, Channel> map = new HashMap<>();
-            map.put(CHANNEL_ID_BROWSER,
-                    new Channel(CHANNEL_ID_BROWSER,
-                            org.chromium.chrome.R.string.notification_category_browser,
-                            NotificationManager.IMPORTANCE_LOW, CHANNEL_GROUP_ID_GENERAL));
-            map.put(CHANNEL_ID_DOWNLOADS,
-                    new Channel(CHANNEL_ID_DOWNLOADS,
-                            org.chromium.chrome.R.string.notification_category_downloads,
-                            NotificationManager.IMPORTANCE_LOW, CHANNEL_GROUP_ID_GENERAL));
-            map.put(CHANNEL_ID_INCOGNITO,
-                    new Channel(CHANNEL_ID_INCOGNITO,
-                            org.chromium.chrome.R.string.notification_category_incognito,
-                            NotificationManager.IMPORTANCE_LOW, CHANNEL_GROUP_ID_GENERAL));
-            map.put(CHANNEL_ID_MEDIA,
-                    new Channel(CHANNEL_ID_MEDIA,
-                            org.chromium.chrome.R.string.notification_category_media,
-                            NotificationManager.IMPORTANCE_LOW, CHANNEL_GROUP_ID_GENERAL));
-            map.put(CHANNEL_ID_SITES,
-                    new Channel(CHANNEL_ID_SITES,
-                            org.chromium.chrome.R.string.notification_category_sites,
-                            NotificationManager.IMPORTANCE_DEFAULT, CHANNEL_GROUP_ID_GENERAL));
-            MAP = Collections.unmodifiableMap(map);
-        }
-    }
-
-    /**
-     * When channels become deprecated they should be removed from PredefinedChannels and their ids
-     * added to this array so they can be deleted on upgrade.
-     * We also want to keep track of old channel ids so they aren't accidentally reused.
-     */
-    private static final String[] LEGACY_CHANNEL_IDS = {};
-
-    // Map defined in static inner class so it's only initialized lazily.
-    private static class PredefinedChannelGroups {
-        static final Map<String, ChannelGroup> MAP;
-        static {
-            Map<String, ChannelGroup> map = new HashMap<>();
-            map.put(CHANNEL_GROUP_ID_GENERAL,
-                    new ChannelGroup(CHANNEL_GROUP_ID_GENERAL,
-                            org.chromium.chrome.R.string.notification_category_group_general));
-            MAP = Collections.unmodifiableMap(map);
-        }
-    }
-
-    /**
-     * @return A set of channel ids of channels that should be initialized on startup.
-     */
-    Set<String> getStartupChannelIds() {
-        // CHANNELS_VERSION must be incremented if the set of channels returned here changes.
-        return PredefinedChannels.MAP.keySet();
-    }
-
-    /**
-     * @return An array of old ChannelIds that may have been returned by
-     * {@link #getStartupChannelIds} in the past, but are no longer in use.
-     */
-    public String[] getLegacyChannelIds() {
-        return LEGACY_CHANNEL_IDS;
-    }
-
-    ChannelGroup getChannelGroupFromId(Channel channel) {
-        return PredefinedChannelGroups.MAP.get(channel.mGroupId);
-    }
-
-    Channel getChannelFromId(@ChannelId String channelId) {
-        return PredefinedChannels.MAP.get(channelId);
-    }
-
-    /**
-     * Helper class containing notification channel properties.
-     */
-    public static class Channel {
-        @ChannelId
-        public final String mId;
-        final int mNameResId;
-        final int mImportance;
-        @ChannelGroupId
-        final String mGroupId;
-
-        Channel(@ChannelId String id, int nameResId, int importance,
-                @ChannelGroupId String groupId) {
-            this.mId = id;
-            this.mNameResId = nameResId;
-            this.mImportance = importance;
-            this.mGroupId = groupId;
-        }
-    }
-
-    /**
-     * Helper class containing notification channel group properties.
-     */
-    public static class ChannelGroup {
-        @ChannelGroupId
-        final String mId;
-        final int mNameResId;
-
-        ChannelGroup(@ChannelGroupId String id, int nameResId) {
-            this.mId = id;
-            this.mNameResId = nameResId;
-        }
-    }
-}