[Offline Pages] Add an observer for requests in the CCT namespace.

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

+// 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.offlinepages;
+
+import org.chromium.base.annotations.CalledByNative;
+
+/**
+ * Class used to propagate the final status of CCT offline pages requests.
+ */
+public class CCTRequestStatus {
+    private CCTRequestStatus(int savePageResult, String savedPageId) {
+        mSavePageResult = savePageResult;
+        mSavedPageId = savedPageId;
+    }
+
+    private int mSavePageResult;
+    private String mSavedPageId;
+
+    /**
+     * @return An org.chromium.components.offlinepages.BackgroundSavePageResult for this request.
+     */
+    public int getSavePageResult() {
+        return mSavePageResult;
+    }
+
+    /**
+     * @return The ID string extracted from the ClientId of the page.
+     */
+    public String getSavedPageId() {
+        return mSavedPageId;
+    }
+
+    /**
+     * Creates a request status object.
+     * @param result an offlinepages.BackgroundSavePageResult
+     * @param savedPageId the ID of the page that was completed.
+     */
+    @CalledByNative
+    public static CCTRequestStatus create(int result, String savedPageId) {
+        return new CCTRequestStatus(result, savedPageId);
+    }
+}