📰 Add user action for the first time the UI is shown

chrome/android/java/src/org/chromium/chrome/browser/suggestions/SuggestionsMetrics.java

 // Copyright 2017 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.suggestions;
 
 import android.support.v7.widget.RecyclerView;
 
 import org.chromium.base.metrics.RecordUserAction;
+import org.chromium.chrome.browser.preferences.ChromePreferenceManager;
 
 /**
  * Exposes methods to report suggestions related events, for UMA or Fetch scheduling purposes.
  */
 public abstract class SuggestionsMetrics {
     private SuggestionsMetrics() {}
 
     // UI Element interactions
 
     public static void recordSurfaceVisible() {
+        if (!ChromePreferenceManager.getInstance().getSuggestionsSurfaceShown()) {
+            RecordUserAction.record("Suggestions.FirstTimeSurfaceVisible");
+            ChromePreferenceManager.getInstance().setSuggestionsSurfaceShown();
+        }
+
         RecordUserAction.record("Suggestions.SurfaceVisible");
     }
 
     public static void recordSurfaceHidden() {
         RecordUserAction.record("Suggestions.SurfaceHidden");
     }
 
     public static void recordTileTapped() {
         RecordUserAction.record("Suggestions.Tile.Tapped");
     }
@@ skipping 29 matching lines @@
 
             RecordUserAction.record("Suggestions.ScrolledAfterOpen");
             mFired = true;
         }
 
         public void reset() {
             mFired = false;
         }
     }
 }