cleanup: Remove comments about lack of UseCounter support for workers.

third_party/WebKit/Source/modules/fetch/GlobalFetch.cpp

Index: third_party/WebKit/Source/modules/fetch/GlobalFetch.cpp
diff --git a/third_party/WebKit/Source/modules/fetch/GlobalFetch.cpp b/third_party/WebKit/Source/modules/fetch/GlobalFetch.cpp
index e636cd786e73fbe7535773fd5848172955d6a9c6..0d3f7f74ffdde5e8c0a6376e7be33e612d65d78a 100644
--- a/third_party/WebKit/Source/modules/fetch/GlobalFetch.cpp
+++ b/third_party/WebKit/Source/modules/fetch/GlobalFetch.cpp
@@ -111,7 +111,6 @@ ScriptPromise GlobalFetch::fetch(ScriptState* script_state,
                                  const RequestInfo& input,
                                  const Dictionary& init,
                                  ExceptionState& exception_state) {
-  // Note that UseCounter doesn't work with SharedWorker or ServiceWorker.
   UseCounter::Count(worker.GetExecutionContext(), UseCounter::kFetch);
   return ScopedFetcher::From(worker)->Fetch(script_state, input, init,
                                             exception_state);