Fail when uploading blob is non-existant

content/browser/blob_storage/chrome_blob_storage_context.cc

Index: content/browser/blob_storage/chrome_blob_storage_context.cc
diff --git a/content/browser/blob_storage/chrome_blob_storage_context.cc b/content/browser/blob_storage/chrome_blob_storage_context.cc
index 92a2e8941c0fcca57d09b8133c65809a37972168..28734c2b4f99256f455f89376bd54f37bceabd71 100644
--- a/content/browser/blob_storage/chrome_blob_storage_context.cc
+++ b/content/browser/blob_storage/chrome_blob_storage_context.cc
@@ -197,7 +197,7 @@ storage::BlobStorageContext* GetBlobStorageContext(
   return blob_storage_context->context();
 }
 
-void AttachRequestBodyBlobDataHandles(ResourceRequestBodyImpl* body,
+bool AttachRequestBodyBlobDataHandles(ResourceRequestBodyImpl* body,
                                       ResourceContext* resource_context) {
   storage::BlobStorageContext* blob_context = GetBlobStorageContext(
       GetChromeBlobStorageContextForResourceContext(resource_context));
@@ -209,14 +209,14 @@ void AttachRequestBodyBlobDataHandles(ResourceRequestBodyImpl* body,
       continue;
     std::unique_ptr<storage::BlobDataHandle> handle =
         blob_context->GetBlobDataFromUUID(element.blob_uuid());
-    DCHECK(handle);
     if (!handle)
-      continue;
+      return false;
     // Ensure the blob and any attached shareable files survive until
     // upload completion. The |body| takes ownership of |handle|.
     const void* key = handle.get();
     body->SetUserData(key, std::move(handle));
   }
+  return true;
 }
 
 }  // namespace content