[EoC] Notify feature enagement system when suggestion is taken

Notify the feature engagement system when a suggestion is clicked,
opened in a new tab or downloaded using a single
'contextual_suggestion_taken' event.

BUG=901915

Change-Id: Iaf5ed83f8a7e36b044541cfe96d3cc4a9fd34d4b
Reviewed-on: https://chromium-review.googlesource.com/c/1321864Reviewed-by: Becky Zhou <huayinz@chromium.org>
Reviewed-by: Tommy Nyquist <nyquist@chromium.org>
Commit-Queue: Theresa <twellington@chromium.org>
Cr-Commit-Position: refs/heads/master@{#606082}

chrome/android/java/src/org/chromium/chrome/browser/contextual_suggestions/ContextualSuggestionsEventReporter.java

@@ -5,11 +5,14 @@
 package org.chromium.chrome.browser.contextual_suggestions;
 
 import org.chromium.base.metrics.RecordHistogram;
+import org.chromium.chrome.browser.feature_engagement.TrackerFactory;
 import org.chromium.chrome.browser.ntp.cards.ActionItem;
 import org.chromium.chrome.browser.ntp.snippets.SnippetArticle;
+import org.chromium.chrome.browser.profiles.Profile;
 import org.chromium.chrome.browser.suggestions.SuggestionsEventReporter;
 import org.chromium.chrome.browser.suggestions.SuggestionsRanker;
 import org.chromium.chrome.browser.tabmodel.TabModelSelector;
+import org.chromium.components.feature_engagement.EventConstants;
 import org.chromium.ui.mojom.WindowOpenDisposition;
 
 /** Reports events related to contextual suggestions. */
@@ -47,6 +50,8 @@ class ContextualSuggestionsEventReporter implements SuggestionsEventReporter {
                 : ContextualSuggestionsEvent.SUGGESTION_CLICKED;
         mSuggestionSource.reportEvent(mTabModelSelector.getCurrentTab().getWebContents(), eventId);
 
+        TrackerFactory.getTrackerForProfile(Profile.getLastUsedProfile())
+                .notifyEvent(EventConstants.CONTEXTUAL_SUGGESTION_TAKEN);
         RecordHistogram.recordSparseHistogram(
                 "ContextualSuggestions.SuggestionClickPosition.Global", suggestion.getGlobalRank());
         RecordHistogram.recordSparseHistogram(

components/feature_engagement/public/android/java/src/org/chromium/components/feature_engagement/EventConstants.java

@@ -51,9 +51,9 @@ public final class EventConstants {
     public static final String CONTEXTUAL_SUGGESTIONS_OPENED = "contextual_suggestions_opened";
 
     /**
-     * The contextual suggestions bottom sheet was shown in its peeking state.
+     * A contextual suggestion was clicked, opened in a new tab or downloaded.
      */
-    public static final String CONTEXTUAL_SUGGESTIONS_PEEKED = "contextual_suggestions_peeked";
+    public static final String CONTEXTUAL_SUGGESTION_TAKEN = "contextual_suggestion_taken";
 
     /**
      * Screenshot is taken with Chrome in the foreground.