Upstream oodles of Chrome for Android code into Chromium.

chrome/android/java_staging/src/org/chromium/chrome/browser/enhancedbookmarks/EnhancedBookmarkSigninActivity.java

+// 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.enhancedbookmarks;
+
+import android.os.Bundle;
+
+import org.chromium.base.ObserverList;
+import org.chromium.base.metrics.RecordUserAction;
+import org.chromium.chrome.browser.ntp.RecentTabsPromoView;
+import org.chromium.chrome.browser.ntp.RecentTabsPromoView.SyncPromoModel;
+import org.chromium.chrome.browser.ntp.RecentTabsPromoView.UserActionListener;
+import org.chromium.chrome.browser.signin.SigninManager;
+import org.chromium.chrome.browser.signin.SigninManager.SignInStateObserver;
+import org.chromium.chrome.browser.sync.SyncController;
+import org.chromium.sync.AndroidSyncSettings;
+import org.chromium.sync.AndroidSyncSettings.AndroidSyncSettingsObserver;
+import org.chromium.sync.signin.ChromeSigninController;
+
+/**
+ * Sign in promotion activity that is triggered from enhanced bookmark UI.
+ */
+public class EnhancedBookmarkSigninActivity extends EnhancedBookmarkActivityBase implements
+        AndroidSyncSettingsObserver, SignInStateObserver, SyncPromoModel, UserActionListener {
+    private SigninManager mSignInManager;
+    private final ObserverList<AndroidSyncSettingsObserver> mObservers =
+            new ObserverList<AndroidSyncSettingsObserver>();
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        if (savedInstanceState == null) {
+            RecordUserAction.record("Stars_SignInPromoActivity_Launched");
+        }
+
+        setContentView(new RecentTabsPromoView(this, this, this));
+
+        AndroidSyncSettings.registerObserver(this, this);
+
+        mSignInManager = SigninManager.get(this);
+        mSignInManager.addSignInStateObserver(this);
+
+        // This signin activity shouldn't be created if user is signed in already, but for just in
+        // case it was signed in just before onCreate somehow.
+        if (isSignedIn()) finish();
+    }
+
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+        AndroidSyncSettings.unregisterObserver(this, this);
+
+        mSignInManager.removeSignInStateObserver(this);
+        mSignInManager = null;
+    }
+
+    // AndroidSyncSettingsObserver
+
+    @Override
+    public void androidSyncSettingsChanged() {
+        for (AndroidSyncSettingsObserver observer : mObservers) {
+            observer.androidSyncSettingsChanged();
+        }
+    }
+
+    // SignInStateObserver
+
+    @Override
+    public void onSignedIn() {
+        androidSyncSettingsChanged();
+        finish();
+    }
+
+    @Override
+    public void onSignedOut() {
+        assert false : "onSignedOut() called on signin activity.";
+    }
+
+    // SyncPromoModel
+
+    @Override
+    public boolean isSyncEnabled() {
+        return AndroidSyncSettings.isSyncEnabled(this);
+    }
+
+    @Override
+    public boolean isSignedIn() {
+        return ChromeSigninController.get(this).isSignedIn();
+    }
+
+    @Override
+    public void enableSync() {
+        SyncController.get(this).start();
+    }
+
+    @Override
+    public void registerForSyncUpdates(AndroidSyncSettingsObserver changeListener) {
+        mObservers.addObserver(changeListener);
+    }
+
+    @Override
+    public void unregisterForSyncUpdates(AndroidSyncSettingsObserver changeListener) {
+        mObservers.removeObserver(changeListener);
+    }
+
+    // UserActionListener
+
+    @Override
+    public void onAccountSelectionConfirmed() {
+        RecordUserAction.record("Stars_SignInPromoActivity_SignedIn");
+    }
+
+    @Override
+    public void onNewAccount() {
+        RecordUserAction.record("Stars_SignInPromoActivity_NewAccount");
+    }
+}