Remove CHECK for debugging https://crbug.com/817981

Bug: 817981
Change-Id: I13fe128e6771600f135e0a8e9cde00c456305c81
Reviewed-on: https://chromium-review.googlesource.com/c/1317301Reviewed-by: Tsuyoshi Horo <horo@chromium.org>
Commit-Queue: Makoto Shimazu <shimazu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#605530}

content/browser/service_worker/service_worker_version.h

@@ -343,9 +343,7 @@ class CONTENT_EXPORT ServiceWorkerVersion
   mojom::ServiceWorker* endpoint() {
     DCHECK(running_status() == EmbeddedWorkerStatus::STARTING ||
            running_status() == EmbeddedWorkerStatus::RUNNING);
-    // Temporarily CHECK for debugging https://crbug.com/817981.
-    CHECK(service_worker_ptr_.is_bound());
-    CHECK(service_worker_ptr_.get());
+    DCHECK(service_worker_ptr_.is_bound());
     return service_worker_ptr_.get();
   }