[Custom Tabs] Implement "Read It Later" Behind a Flag

chrome/android/java/src/org/chromium/chrome/browser/customtabs/CustomTabAppMenuPropertiesDelegate.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.customtabs;
 
 import android.content.Intent;
 import android.content.pm.PackageManager;
 import android.content.pm.ResolveInfo;
 import android.net.Uri;
 import android.os.AsyncTask;
 import android.view.Menu;
 import android.view.MenuItem;
 
 import org.chromium.base.BuildInfo;
 import org.chromium.base.VisibleForTesting;
 import org.chromium.chrome.R;
 import org.chromium.chrome.browser.ChromeActivity;
+import org.chromium.chrome.browser.ChromeFeatureList;
 import org.chromium.chrome.browser.appmenu.AppMenuPropertiesDelegate;
 import org.chromium.chrome.browser.share.ShareHelper;
 import org.chromium.chrome.browser.tab.Tab;
 
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.concurrent.ExecutionException;
 
 /**
@@ skipping 68 matching lines @@
                 MenuItem bookmarkItem = menu.findItem(R.id.bookmark_this_page_id);
                 updateBookmarkMenuItem(bookmarkItem, currentTab);
             } else {
                 // Because we have custom logic for laying out the icon row, the bookmark icon must
                 // be explicitly removed instead of just made invisible.
                 menu.findItem(R.id.icon_row_menu_id).getSubMenu().removeItem(
                         R.id.bookmark_this_page_id);
             }
 
             MenuItem openInChromeItem = menu.findItem(R.id.open_in_browser_id);
-            try {
-                openInChromeItem.setTitle(mDefaultBrowserFetcher.get());
-            } catch (InterruptedException | ExecutionException e) {
-                openInChromeItem.setTitle(
-                        mActivity.getString(R.string.menu_open_in_product_default));
+            MenuItem readItLaterItem = menu.findItem(R.id.read_it_later_id);
+            if (ChromeFeatureList.isEnabled("ReadItLaterInMenu")) {
+                // In the read-it-later experiment, Chrome will be the only browser to open the link
+                openInChromeItem.setTitle(R.string.menu_open_in_chrome);
+            } else {
+                readItLaterItem.setVisible(false);
+                try {
+                    openInChromeItem.setTitle(mDefaultBrowserFetcher.get());
+                } catch (InterruptedException | ExecutionException e) {
+                    openInChromeItem.setTitle(
+                            mActivity.getString(R.string.menu_open_in_product_default));
+                }
             }
 
             // Add custom menu items. Make sure they are only added once.
             if (!mIsCustomEntryAdded) {
                 mIsCustomEntryAdded = true;
                 for (int i = 0; i < mMenuEntries.size(); i++) {
                     MenuItem item = menu.add(0, 0, 1, mMenuEntries.get(i));
                     mItemToIndexMap.put(item, i);
                 }
             }
@@ skipping 21 matching lines @@
      * the same title, a random one will be returned. This method is for testing purpose _only_.
      */
     @VisibleForTesting
     MenuItem getMenuItemForTitle(String title) {
         for (MenuItem item : mItemToIndexMap.keySet()) {
             if (item.getTitle().equals(title)) return item;
         }
         return null;
     }
 }