Respond to CR.

Signal/src/ViewControllers/ConversationView/Cells/OWSMessageBubbleView.m

@@ -1464,10 +1464,6 @@ const UIDataDetectorTypes kOWSAllowedDataDetectorTypes
     }
 
     if (self.viewItem.linkPreview) {
-        // Treat this as a "quoted reply" gesture if:
-        //
-        // * There is a "quoted reply" view.
-        // * The gesture occured within or above the "quoted reply" view.
         CGPoint location = [self convertPoint:locationInMessageBubble toView:self.linkPreviewView];
         if (CGRectContainsPoint(self.linkPreviewView.bounds, location)) {
             return OWSMessageGestureLocation_LinkPreview;

Signal/src/ViewControllers/MessageDetailViewController.swift

@@ -711,9 +711,15 @@ class MessageDetailViewController: OWSViewController, MediaGalleryDataSourceDele
     }
 
     func didTapConversationItem(_ viewItem: ConversationViewItem, linkPreview: OWSLinkPreview) {
-        // no - op
+        guard let urlString = linkPreview.urlString else {
-
+            owsFailDebug("Missing url.")
-        // TODO:
+            return
+        }
+        guard let url = URL(string: urlString) else {
+            owsFailDebug("Invalid url: \(urlString).")
+            return
+        }
+        UIApplication.shared.openURL(url)
     }
 
     @objc func didLongPressSent(sender: UIGestureRecognizer) {