📰 Tweak the suggestion ranks for UMA to handle fetchMore

chrome/android/java/src/org/chromium/chrome/browser/ntp/snippets/FakeSuggestionsSource.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.ntp.snippets;
 
 import android.graphics.Bitmap;
 
 import org.chromium.base.Callback;
 import org.chromium.chrome.browser.ntp.cards.SuggestionsCategoryInfo;
 import org.chromium.chrome.browser.ntp.snippets.CategoryStatus.CategoryStatusEnum;
+import org.chromium.chrome.browser.suggestions.SuggestionsUma;
 
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
 
 /**
  * A fake Suggestions source for use in unit and instrumentation tests.
@@ skipping 110 matching lines @@
             callback.onResult(mThumbnails.get(suggestion.mIdWithinCategory));
         }
     }
 
     @Override
     public void fetchSuggestions(@CategoryInt int category, String[] displayedSuggestionIds) {
         throw new UnsupportedOperationException();
     }
 
     @Override
-    public void setObserver(Observer observer) {
+    public void init(Observer observer, SuggestionsUma umaHelper) {
         mObserver = observer;
     }
 
     @Override
     public int[] getCategories() {
         int[] result = new int[mCategories.size()];
         int index = 0;
         for (int id : mCategories) result[index++] = id;
         return result;
     }
@@ skipping 11 matching lines @@
 
     @Override
     public List<SnippetArticle> getSuggestionsForCategory(int category) {
         if (!SnippetsBridge.isCategoryStatusAvailable(mCategoryStatus.get(category))) {
             return Collections.emptyList();
         }
         List<SnippetArticle> result = mSuggestions.get(category);
         return result == null ? Collections.<SnippetArticle>emptyList() : result;
     }
 }