Disable learning text suggestions if in incognito.

chrome/android/java/src/org/chromium/chrome/browser/toolbar/CustomTabToolbar.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.toolbar;
 
 import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
 import android.animation.ValueAnimator;
 import android.animation.ValueAnimator.AnimatorUpdateListener;
@@ skipping 227 matching lines @@
     public int getTabStripHeight() {
         return 0;
     }
 
     @Override
     public Tab getCurrentTab() {
         return getToolbarDataProvider().getTab();
     }
 
     @Override
+    public boolean isIncognito() {
+        return super.isIncognito();

[Changwan Ryu, 2017/05/23 18:54:23]

Hmm.. We probably don't need this?

[Ted C, 2017/05/23 19:17:55]

The super version is protected and the interface requires public, so this is
required to increase the visibility.

+    }
+
+    @Override
     public boolean shouldEmphasizeHttpsScheme() {
         int securityLevel = getSecurityLevel();
         return securityLevel == ConnectionSecurityLevel.DANGEROUS
                 || securityLevel == ConnectionSecurityLevel.SECURE_WITH_POLICY_INSTALLED_CERT;
     }
 
     @Override
     public void setShowTitle(boolean showTitle) {
         if (showTitle) {
             mState = STATE_DOMAIN_AND_TITLE;
@@ skipping 486 matching lines @@
     public View getMenuButtonWrapper() {
         // This class has no menu button wrapper, so return the menu button instead.
         return mMenuButton;
     }
 
     @Override
     public boolean mustQueryUrlBarLocationForSuggestions() {
         return false;
     }
 }