[TTS] Write initial Tap-features to Ranker.

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

 // 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;
 
+import java.net.URL;
+
 /**
  * An interface for logging to UMA via Ranker.
  */
 public interface ContextualSearchRankerLogger {
     enum Feature {
         UNKNOWN,
         // Outcome labels:
         OUTCOME_WAS_PANEL_OPENED,
         OUTCOME_WAS_QUICK_ACTION_CLICKED,
         OUTCOME_WAS_QUICK_ANSWER_SEEN,
         // Features:
         DURATION_AFTER_SCROLL_MS,
         DURATION_BEFORE_SCROLL_MS,
         SCREEN_TOP_DPS,
         WAS_SCREEN_BOTTOM,
         // User usage features:
         PREVIOUS_WEEK_IMPRESSIONS_COUNT,
         PREVIOUS_WEEK_CTR_PERCENT,
         PREVIOUS_28DAY_IMPRESSIONS_COUNT,
         PREVIOUS_28DAY_CTR_PERCENT
     }
 
     /**
+     * Sets the URL for the page.
+     * @param basePageUrl The URL of the base page to log with Ranker.
+     */
+    void setBasePageUrl(URL basePageUrl);
+
+    /**
      * Logs a particular key/value pair.
      * @param feature The feature to log.
      * @param value The value to log, which is associated with the given key.
      */
     void log(Feature feature, Object value);
 
     /**
      * Logs the final outcome value that indicates the ML label.
      * @param value The outcome label value.
      */
     void logOutcome(Object value);
 
     /**
      * Writes all the accumulated log entries and resets the logger so that future log calls
      * accumulate into a new record.
      */
     void writeLogAndReset();
 }