[TTS] Write initial Tap-features to Ranker.

chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchFieldTrial.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.CommandLine;
 import org.chromium.base.SysUtils;
@@ skipping 40 matching lines @@
 
     private static final String MINIMUM_SELECTION_LENGTH = "minimum_selection_length";
 
     // Safety switch for disabling online-detection.  Also used to disable detection when running
     // tests.
     @VisibleForTesting
     static final String ONLINE_DETECTION_DISABLED = "disable_online_detection";
 
     private static final String DISABLE_AMP_AS_SEPARATE_TAB = "disable_amp_as_separate_tab";
 
+    // Machine Learning
+    private static final String ENABLE_RANKER_LOGGING = "enable_ranker_logging";
+
     // Privacy-related flags
     private static final String DISABLE_SEND_HOME_COUNTRY = "disable_send_home_country";
     private static final String DISABLE_PAGE_CONTENT_NOTIFICATION =
             "disable_page_content_notification";
 
     // Cached values to avoid repeated and redundant JNI operations.
     private static Boolean sEnabled;
     private static Boolean sDisableSearchTermResolution;
     private static Boolean sIsMandatoryPromoEnabled;
     private static Integer sMandatoryPromoLimit;
     private static Boolean sIsPeekPromoEnabled;
     private static Integer sPeekPromoMaxCount;
     private static Boolean sIsTranslationDisabled;
     private static Boolean sIsEnglishTargetTranslationEnabled;
     private static Integer sScreenTopSuppressionDps;
     private static Boolean sIsBarOverlapCollectionEnabled;
     private static Boolean sIsBarOverlapSuppressionEnabled;
     private static Integer sMinimumSelectionLength;
     private static Boolean sIsOnlineDetectionDisabled;
     private static Boolean sIsAmpAsSeparateTabDisabled;
     private static Boolean sContextualSearchSingleActionsEnabled;
     private static Boolean sIsSendHomeCountryDisabled;
     private static Boolean sIsPageContentNotificationDisabled;
     private static Boolean sContextualSearchUrlActionsEnabled;
+    private static Boolean sIsRankerLoggingEnabled;
 
     /**
      * Don't instantiate.
      */
     private ContextualSearchFieldTrial() {}
 
     /**
      * Checks the current Variations parameters associated with the active group as well as the
      * Chrome preference to determine if the service is enabled.
      * @return Whether Contextual Search is enabled or not.
@@ skipping 199 matching lines @@
      * @return Whether sending the page content notifications to observers (e.g. icing for
      *         conversational search) is disabled.
      */
     static boolean isPageContentNotificationDisabled() {
         if (sIsPageContentNotificationDisabled == null) {
             sIsPageContentNotificationDisabled = getBooleanParam(DISABLE_PAGE_CONTENT_NOTIFICATION);
         }
         return sIsPageContentNotificationDisabled.booleanValue();
     }
 
+    /**
+     * @return Whether or not logging to Ranker is enabled.
+     */
+    static boolean isRankerLoggingEnabled() {
+        if (sIsRankerLoggingEnabled == null) {
+            sIsRankerLoggingEnabled = getBooleanParam(ENABLE_RANKER_LOGGING);
+        }
+
+        return sIsRankerLoggingEnabled;
+    }
+
     // ---------------
     // Features.
     // ---------------
 
     /**
      * @return Whether or not single actions based on Contextual Cards is enabled.
      */
     static boolean isContextualSearchSingleActionsEnabled() {
         if (sContextualSearchSingleActionsEnabled == null) {
             sContextualSearchSingleActionsEnabled =
@@ skipping 50 matching lines @@
             try {
                 return Integer.parseInt(value);
             } catch (NumberFormatException e) {
                 return defaultValue;
             }
         }
 
         return defaultValue;
     }
 }