[Roselle] Fix app ID normalization bug.

I forgot to normalize the app IDs feeding into the Roselle model at
inference time, leading to some (not all) apps erroneously never being
ranked by the model.

Bug: 1019068
Change-Id: I0288c3cf591b92f9f0a9c356630b2212d29d16a0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1885852
Commit-Queue: Tony Yeoman <tby@chromium.org>
Reviewed-by: Charles . <charleszhao@chromium.org>
Cr-Commit-Position: refs/heads/master@{#710208}

chrome/browser/ui/app_list/search/search_result_ranker/search_result_ranker.cc

@@ -425,7 +425,7 @@ void SearchResultRanker::Rank(Mixer::SortedResults* results) {
         }
       } else {
         if (app_ranker_) {
-          const auto& it = app_ranks_.find(result.result->id());
+          const auto& it = app_ranks_.find(NormalizeAppId(result.result->id()));
           if (it != app_ranks_.end()) {
             result.score = kBoostOfApps + ReRange(it->second, 0.67, 1.0);
           }