Add helper to open URL in new activity

chrome/android/java_sources.gni

 # Copyright 2016 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.
 
 chrome_java_sources = [
   "java/src/com/google/android/apps/chrome/appwidget/bookmarks/BookmarkThumbnailWidgetProvider.java",
   "java/src/org/chromium/chrome/browser/ActivityTabTaskDescriptionHelper.java",
   "java/src/org/chromium/chrome/browser/ActivityTaskDescriptionIconGenerator.java",
   "java/src/org/chromium/chrome/browser/AfterStartupTaskUtils.java",
   "java/src/org/chromium/chrome/browser/ApplicationInitialization.java",
@@ skipping 553 matching lines @@
   "java/src/org/chromium/chrome/browser/ntp/NativePageDialog.java",
   "java/src/org/chromium/chrome/browser/ntp/NativePageFactory.java",
   "java/src/org/chromium/chrome/browser/ntp/NativePageRootFrameLayout.java",
   "java/src/org/chromium/chrome/browser/ntp/NewTabPage.java",
   "java/src/org/chromium/chrome/browser/ntp/NewTabPageLayout.java",
   "java/src/org/chromium/chrome/browser/ntp/NewTabPagePrefs.java",
   "java/src/org/chromium/chrome/browser/ntp/NewTabPageScrollView.java",
   "java/src/org/chromium/chrome/browser/ntp/NewTabPageToolbar.java",
   "java/src/org/chromium/chrome/browser/ntp/NewTabPageUma.java",
   "java/src/org/chromium/chrome/browser/ntp/NewTabPageView.java",
+  "java/src/org/chromium/chrome/browser/ntp/NotificationHelper.java",
   "java/src/org/chromium/chrome/browser/ntp/RecentTabsExpandableListView.java",
   "java/src/org/chromium/chrome/browser/ntp/RecentTabsGroupView.java",
   "java/src/org/chromium/chrome/browser/ntp/RecentTabsManager.java",
   "java/src/org/chromium/chrome/browser/ntp/RecentTabsPage.java",
   "java/src/org/chromium/chrome/browser/ntp/RecentTabsRowAdapter.java",
   "java/src/org/chromium/chrome/browser/ntp/RecentlyClosedBridge.java",
   "java/src/org/chromium/chrome/browser/ntp/TitleUtil.java",
   "java/src/org/chromium/chrome/browser/ntp/UiConfig.java",
   "java/src/org/chromium/chrome/browser/ntp/cards/AboveTheFoldItem.java",
   "java/src/org/chromium/chrome/browser/ntp/cards/ActionItem.java",
@@ skipping 958 matching lines @@
   "sync_shell/javatests/src/org/chromium/chrome/browser/sync/SyncTestBase.java",
   "sync_shell/javatests/src/org/chromium/chrome/browser/sync/TypedUrlsTest.java",
   "sync_shell/javatests/src/org/chromium/chrome/browser/sync/ui/PassphraseTypeDialogFragmentTest.java",
 ]
 
 # Only used for testing, should not be shipped to end users.
 if (!is_official_build) {
   chrome_java_sources += [ "java/src/org/chromium/chrome/browser/offlinepages/evaluation/OfflinePageEvaluationBridge.java" ]
   chrome_test_java_sources += [ "javatests/src/org/chromium/chrome/browser/offlinepages/OfflinePageSavePageLaterEvaluationTest.java" ]
 }