[TTS] Gather surrounding text on Tap before any UX.

chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/action/SearchActionListener.java

Index: chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/action/SearchActionListener.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/action/SearchActionListener.java b/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/action/SearchActionListener.java
new file mode 100644
index 0000000000000000000000000000000000000000..97df00db19b5b129b88dc7e16dc7af87ceca4786
--- /dev/null
+++ b/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/action/SearchActionListener.java
@@ -0,0 +1,36 @@
+// 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.
+
+package org.chromium.chrome.browser.contextualsearch.action;
+
+/**
+ * Listens to notifications sent by the {@link SearchAction} class.
+ * This is part of the 2016-refactoring (crbug.com/624609, go/cs-refactoring-2016).
+ */
+public class SearchActionListener {
+    /**
+     * Indicates that the Contextual Search Context, which includes the selected word
+     * and surrounding text, is ready to be accessed.
+     * @param action The {@link SearchAction} whose context is ready.
+     */
+    protected void onContextReady(SearchAction action) {}
+
+    /**
+     * Indicates that the {@code SearchAction} has been accepted (not suppressed).
+     * @param action The {@link SearchAction} that has been accepted.
+     */
+    protected void onActionAccepted(SearchAction action) {}
+
+    /**
+     * Indicates that the {@code SearchAction} has been suppressed (not accepted).
+     * @param action The {@link SearchAction} that has been suppressed.
+     */
+    protected void onActionSuppressed(SearchAction action) {}
+
+    /**
+     * Indicates that the {@code SearchAction} has ended.
+     * @param action The {@link SearchAction} that has ended.
+     */
+    protected void onActionEnded(SearchAction action) {}
+}