Add referrer through service connection in custom tabs

chrome/android/java/src/org/chromium/chrome/browser/IntentHandler.java

Index: chrome/android/java/src/org/chromium/chrome/browser/IntentHandler.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/IntentHandler.java b/chrome/android/java/src/org/chromium/chrome/browser/IntentHandler.java
index 0fa84e26471f45ac76ca94b84fca36fb559e15e0..4307048b6247face1407b1a134867dd4312574fe 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/IntentHandler.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/IntentHandler.java
@@ -285,9 +285,8 @@ public class IntentHandler {
      * Intent.
      *
      * @return Whether the Intent was successfully handled.
-     * TODO(mariakhomenko): make package protected after ChromeTabbedActivity is upstreamed.
      */
-    public boolean onNewIntent(Context context, Intent intent) {
+    boolean onNewIntent(Context context, Intent intent) {
         assert intentHasValidUrl(intent);
         String url = getUrlFromIntent(intent);
         boolean hasUserGesture =
@@ -399,6 +398,16 @@ public class IntentHandler {
     }
 
     /**
+     * Constructs a valid referrer using the given authority.
+     * @param authority The authority to use.
+     * @return Referrer with default policy that uses the valid android app scheme.
+     */
+    public static Referrer constructValidReferrerForAuthority(String authority) {
+        return new Referrer(new Uri.Builder().scheme(ANDROID_APP_REFERRER_SCHEME)
+                .authority(authority).build().toString(), Referrer.REFERRER_POLICY_DEFAULT);
+    }
+
+    /**
      * Extracts the URL from voice search result intent.
      * @return URL if it was found, null otherwise.
      */