📰 Tweak the suggestion ranks for UMA to handle fetchMore

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

Index: chrome/android/java/src/org/chromium/chrome/browser/suggestions/ContentSuggestionsActivity.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/suggestions/ContentSuggestionsActivity.java b/chrome/android/java/src/org/chromium/chrome/browser/suggestions/ContentSuggestionsActivity.java
index 8ca0ed49cf9509449895664db7957dc4dec69b4a..0d66ebc7e2ab0eb9803884f2bc64692e55db5bb2 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/suggestions/ContentSuggestionsActivity.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/suggestions/ContentSuggestionsActivity.java
@@ -94,23 +94,7 @@ public void navigateToRecentTabs() {}
         public void navigateToDownloadManager() {}
 
         @Override
-        public void trackSnippetsPageImpression(int[] categories, int[] suggestionsPerCategory) {}
-
-        @Override
-        public void trackSnippetImpression(SnippetArticle article) {}
-
-        @Override
-        public void trackSnippetMenuOpened(SnippetArticle article) {}
-
-        @Override
-        public void trackSnippetCategoryActionImpression(int category, int position) {}
-
-        @Override
-        public void trackSnippetCategoryActionClick(int category, int position) {}
-
-        @Override
-        public void openSnippet(
-                int windowOpenDisposition, SnippetArticle article, int categoryIndex) {}
+        public void openSnippet(int windowOpenDisposition, SnippetArticle article) {}
 
         @Override
         public void focusSearchBox(boolean beginVoiceSearch, String pastedText) {}
@@ -163,6 +147,11 @@ public boolean isCurrentPage() {
         public ContextMenuManager getContextMenuManager() {
             return mContextMenuManager;
         }
+
+        @Override
+        public SuggestionsMetricsReporter getSuggestionsMetricsReporter() {
+            return mSnippetsBridge;
+        }
     }
 
     @Override
@@ -198,6 +187,10 @@ protected void onDestroy() {
         for (DestructionObserver observer : mDestructionObservers) {
             observer.onDestroy();
         }
+
+        mSnippetsBridge.destroy();
+        mSnippetsBridge = null;
+
         super.onDestroy();
     }
 }