[BlobStorage] Better net error reporting for pre-broken blobs

content/browser/blob_storage/blob_url_request_job_unittest.cc

Index: content/browser/blob_storage/blob_url_request_job_unittest.cc
diff --git a/content/browser/blob_storage/blob_url_request_job_unittest.cc b/content/browser/blob_storage/blob_url_request_job_unittest.cc
index bf7a7611c135dc22818aab60c30eefb20173acb2..90cdb28623bce25fee6758f204c2476031082d12 100644
--- a/content/browser/blob_storage/blob_url_request_job_unittest.cc
+++ b/content/browser/blob_storage/blob_url_request_job_unittest.cc
@@ -603,4 +603,10 @@ TEST_F(BlobURLRequestJobTest, TestZeroSizeSideData) {
   EXPECT_FALSE(url_request_delegate_.metadata());
 }
 
+TEST_F(BlobURLRequestJobTest, BrokenBlob) {
+  blob_handle_ = blob_context_.AddBrokenBlob(
+      "uuid", "", "", storage::BlobStatus::ERR_INVALID_CONSTRUCTION_ARGUMENTS);
+  TestErrorRequest(500);
+}
+
 }  // namespace content