Add OPEN_IN_TAB and DOWNLOAD_LINK capabilities

Change-Id: I72d01908dd17cf2ac66ee26eb314e1cb8b22f55b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2208296Reviewed-by: Ian Wells <iwells@chromium.org>
Commit-Queue: Dan H <harringtond@chromium.org>
Cr-Commit-Position: refs/heads/master@{#770629}

components/feed/core/proto/v2/wire/capability.proto

@@ -36,5 +36,7 @@ enum Capability {
   // Enable the card menu.
   CARD_MENU = 19;
   REQUEST_SCHEDULE = 20;
+  OPEN_IN_TAB = 27;
+  DOWNLOAD_LINK = 28;
   reserved 2 to 4, 6 to 8, 12;
 }

components/feed/core/v2/proto_util.cc

@@ -116,6 +116,9 @@ feedwire::Request CreateFeedQueryRequest(
   feedwire::FeedRequest& feed_request = *request.mutable_feed_request();
   feed_request.add_client_capability(feedwire::Capability::BASE_UI);
   feed_request.add_client_capability(feedwire::Capability::REQUEST_SCHEDULE);
+  feed_request.add_client_capability(feedwire::Capability::OPEN_IN_TAB);
+  feed_request.add_client_capability(feedwire::Capability::DOWNLOAD_LINK);
+
   *feed_request.mutable_client_info() = CreateClientInfo(request_metadata);
   feedwire::FeedQuery& query = *feed_request.mutable_feed_query();
   query.set_reason(request_reason);