📰 Add visibility change triggers for bottom sheet content

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 recordSurfaceHalfVisible() {
+        RecordUserAction.record("Suggestions.SurfaceHalfVisible");
+    }
+
+    public static void recordSurfaceFullyVisible() {
+        RecordUserAction.record("Suggestions.SurfaceFullyVisible");
+    }
+
     public static void recordSurfaceHidden() {
         RecordUserAction.record("Suggestions.SurfaceHidden");
     }
 
     public static void recordTileTapped() {
         RecordUserAction.record("Suggestions.Tile.Tapped");
     }
 
     public static void recordCardTapped() {
         RecordUserAction.record("Suggestions.Card.Tapped");
@@ skipping 26 matching lines @@
 
             RecordUserAction.record("Suggestions.ScrolledAfterOpen");
             mFired = true;
         }
 
         public void reset() {
             mFired = false;
         }
     }
 }