[TTS] Extract tapped text before showing UI.

chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchSelectionHandler.java

Index: chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchSelectionHandler.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchSelectionHandler.java b/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchSelectionHandler.java
index 40892f4e09cee2e2f09562f905b67cfa5e54f63e..865f36a0b2390b8fa4a2aaaa40d8a0f5ede54acc 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchSelectionHandler.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchSelectionHandler.java
@@ -18,6 +18,11 @@ interface ContextualSearchSelectionHandler {
     public void handleScroll();
 
     /**
+     * Handle the selection being cleared on the base page.
+     */
+    public void handleSelectionCleared();
+
+    /**
      * Handle a valid tap gesture on the base page.
      */
     public void handleValidTap();
@@ -61,6 +66,11 @@ interface ContextualSearchSelectionHandler {
     public void handleSuppressedTap();
 
     /**
+     * Handle a Tap gesture that has not been suppressed by showing the Tap Search UI.
+     */
+    public void handleNonSuppressedTap();
+
+    /**
      * Handle updating metrics to reflect that a Tap gesture <i>would</i> be suppressed
      * for the given heuristics.
      * @param tapHeuristics The set of heuristics that would suppress the Tap.