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

chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchSelectionController.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.contextualsearch;
 
 import android.text.TextUtils;
 
 import org.chromium.base.VisibleForTesting;
 import org.chromium.chrome.browser.ChromeActivity;
@@ skipping 187 matching lines @@
     }
 
     /**
      * Clears the selection.
      */
     void clearSelection() {
         ContentViewCore baseContentView = getBaseContentView();
         if (baseContentView != null) {
             baseContentView.clearSelection();
         }
-        resetAllStates();
+        resetSelectionStates();

[Donn Denman, 2017/05/25 19:56:47]

This looks like a bug that encountered when doing some other debugging... that
is orthogonal to this CL:
Seems like clearSelection() should only clear the "selection" states, not all
states.

     }
 
     /**
      * Handles a change in the current Selection.
      * @param selection The selection portion of the context.
      */
     void handleSelectionChanged(String selection) {
         if (mDidExpandSelection) {
             mSelectedText = selection;
             mDidExpandSelection = false;
@@ skipping 126 matching lines @@
             mHandler.handleInvalidTap();
         }
     }
 
     /**
      * Handles Tap suppression by making a callback to either the handler's #handleSuppressedTap()
      * or #handleNonSuppressedTap() after a possible delay.
      * This should be called when the context is fully built (by gathering surrounding text
      * if needed, etc) but before showing any UX.
      */
-    void handleShouldSuppressTap() {
+    void handleShouldSuppressTap(ContextualSearchContext contextualSearchContext) {
         int x = (int) mX;
         int y = (int) mY;
 
         // TODO(donnd): add a policy method to get adjusted tap count.
         ChromePreferenceManager prefs = ChromePreferenceManager.getInstance();
         int adjustedTapsSinceOpen = prefs.getContextualSearchTapCount()
                 - prefs.getContextualSearchTapQuickAnswerCount();
-        TapSuppressionHeuristics tapHeuristics =
-                new TapSuppressionHeuristics(this, mLastTapState, x, y, adjustedTapsSinceOpen);
+        TapSuppressionHeuristics tapHeuristics = new TapSuppressionHeuristics(
+                this, mLastTapState, x, y, adjustedTapsSinceOpen, contextualSearchContext);
         // TODO(donnd): Move to be called when the panel closes to work with states that change.
         tapHeuristics.logConditionState();
         // Tell the manager what it needs in order to log metrics on whether the tap would have
         // been suppressed if each of the heuristics were satisfied.
         mHandler.handleMetricsForWouldSuppressTap(tapHeuristics);
 
         boolean shouldSuppressTap = tapHeuristics.shouldSuppressTap();
         if (mTapTimeNanoseconds != 0) {
             // Remember the tap state for subsequent tap evaluation.
             mLastTapState =
@@ skipping 177 matching lines @@
         // Starts are inclusive and ends are non-inclusive for both GSAContext & matcher.
         while (matcher.find()) {
             if (startOffset >= matcher.start() && endOffset <= matcher.end()) {
                 return true;
             }
         }
 
         return false;
     }
 }