[TTS] Add some initial signals for Tap in content.

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/AppIndexingUtil.java",
@@ skipping 245 matching lines @@
   "java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchUma.java",
   "java/src/org/chromium/chrome/browser/contextualsearch/CtrSuppression.java",
   "java/src/org/chromium/chrome/browser/contextualsearch/DisableablePromoTapCounter.java",
   "java/src/org/chromium/chrome/browser/contextualsearch/NearTopTapSuppression.java",
   "java/src/org/chromium/chrome/browser/contextualsearch/QuickAnswersHeuristic.java",
   "java/src/org/chromium/chrome/browser/contextualsearch/RecentScrollTapSuppression.java",
   "java/src/org/chromium/chrome/browser/contextualsearch/SwipeRecognizer.java",
   "java/src/org/chromium/chrome/browser/contextualsearch/TapFarFromPreviousSuppression.java",
   "java/src/org/chromium/chrome/browser/contextualsearch/TapSuppression.java",
   "java/src/org/chromium/chrome/browser/contextualsearch/TapSuppressionHeuristics.java",
+  "java/src/org/chromium/chrome/browser/contextualsearch/TapWordEdgeSuppression.java",
+  "java/src/org/chromium/chrome/browser/contextualsearch/TapWordLengthSuppression.java",
   "java/src/org/chromium/chrome/browser/cookies/CanonicalCookie.java",
   "java/src/org/chromium/chrome/browser/cookies/CookiesFetcher.java",
   "java/src/org/chromium/chrome/browser/crash/ChromeMinidumpUploadJobService.java",
   "java/src/org/chromium/chrome/browser/crash/ChromeMinidumpUploaderDelegate.java",
   "java/src/org/chromium/chrome/browser/crash/LogcatExtractionRunnable.java",
   "java/src/org/chromium/chrome/browser/crash/MinidumpLogcatPrepender.java",
   "java/src/org/chromium/chrome/browser/crash/MinidumpUploadRetry.java",
   "java/src/org/chromium/chrome/browser/crash/MinidumpUploadService.java",
   "java/src/org/chromium/chrome/browser/customtabs/ClientManager.java",
   "java/src/org/chromium/chrome/browser/customtabs/CustomButtonParams.java",
@@ skipping 1528 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" ]
 }