[Offline pages] Refactoring: Merge Connectivity Listener into TabObserver

chrome/android/java/src/org/chromium/chrome/browser/offlinepages/OfflinePageConnectivityListener.java

Index: chrome/android/java/src/org/chromium/chrome/browser/offlinepages/OfflinePageConnectivityListener.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/offlinepages/OfflinePageConnectivityListener.java b/chrome/android/java/src/org/chromium/chrome/browser/offlinepages/OfflinePageConnectivityListener.java
deleted file mode 100644
index af1ffaeadfddb6f0324a3791c4d6deab1dcba3c4..0000000000000000000000000000000000000000
--- a/chrome/android/java/src/org/chromium/chrome/browser/offlinepages/OfflinePageConnectivityListener.java
+++ /dev/null
@@ -1,94 +0,0 @@
-// Copyright 2015 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.offlinepages;
-
-import android.content.Context;
-
-import org.chromium.base.Log;
-import org.chromium.chrome.browser.snackbar.SnackbarManager;
-import org.chromium.chrome.browser.snackbar.SnackbarManager.SnackbarController;
-import org.chromium.chrome.browser.tab.Tab;
-import org.chromium.net.NetworkChangeNotifier;
-
-/**
- * A class to listen and respond to network connectivity events while offline pages are active.
- */
-public class OfflinePageConnectivityListener
-        implements NetworkChangeNotifier.ConnectionTypeObserver {
-    private static final String TAG = "OfflinePageCL";
-    private Context mContext;
-    private SnackbarManager mSnackbarManager;
-    private Tab mTab;
-    private boolean mSeen;
-    private boolean mEnabled;
-    private SnackbarController mSnackbarController;
-
-    /**
-     * Builds an offline page connectivity listener.
-     * @param context android context
-     * @param snackbarManager The snackbar manager to show and dismiss snackbars.
-     * @param tab The current tab that we are setting up a listener for.
-     * @param snackbarController The snackbar controller to control snackbar behavior.
-     */
-    public OfflinePageConnectivityListener(Context context, SnackbarManager snackbarManager,
-            Tab tab, SnackbarController snackbarController) {
-        this.mContext = context;
-        this.mSnackbarManager = snackbarManager;
-        this.mTab = tab;
-        this.mSeen = false;
-        this.mEnabled = false;
-        enable(snackbarController);
-    }
-
-    @Override
-    public void onConnectionTypeChanged(int connectionType) {
-        Log.d(TAG, "Got connectivity event, connectionType: " + connectionType + ", controller "
-                        + mSnackbarController);
-
-        boolean connected = NetworkChangeNotifier.isOnline();
-        Log.d(TAG, "Connection changed, connected " + connected);
-
-        // TODO(petewil): We should consider using the connection quality monitor instead
-        // of the connection event here - don't offer to reload if connection quality is bad.
-        // Maybe the NetworkConnectivityListener is the right place to use the quality monitor.
-
-        // Shows or hides the snackbar as needed.  This also adds some hysterisis - if we keep
-        // connecting and disconnecting, we don't want to flash the snackbar.  It will timeout after
-        // several seconds.
-        if (connected && mTab != null && !mSeen) {
-            Log.d(TAG, "Connection became available, show reload snackbar.");
-            OfflinePageUtils.showOfflineSnackbarIfNecessary(
-                    mContext, mSnackbarManager, mTab, mSnackbarController);
-            // We can stop listening for online transitions once we go online.
-            disable();
-            mSeen = true;
-        }
-    }
-
-    /**
-     * Enable the listener when we have an offline page showing.
-     * @param snackbarController The snackbar controller to control snackbar behavior.
-     */
-    public void enable(SnackbarController snackbarController) {
-        if (!mEnabled) {
-            Log.d(TAG, "enabled");
-            NetworkChangeNotifier.addConnectionTypeObserver(this);
-            mEnabled = true;
-            mSeen = false;
-        }
-        mSnackbarController = snackbarController;
-    }
-
-    /**
-     * Disable the listener when we are done with the offline page.
-     */
-    public void disable() {
-        if (mEnabled) {
-            Log.d(TAG, "disabled");
-            NetworkChangeNotifier.removeConnectionTypeObserver(this);
-        }
-        mEnabled = false;
-    }
-}