[BlobAsync] Asynchronous Blob Construction Final Patch

storage/browser/blob/blob_data_snapshot.cc

Index: storage/browser/blob/blob_data_snapshot.cc
diff --git a/storage/browser/blob/blob_data_snapshot.cc b/storage/browser/blob/blob_data_snapshot.cc
index 0071a11dfd2e9fd96b9aad2380de8e3db0e19802..45a85242e088c339de323032857e67a4b43b1fd4 100644
--- a/storage/browser/blob/blob_data_snapshot.cc
+++ b/storage/browser/blob/blob_data_snapshot.cc
@@ -47,4 +47,16 @@ size_t BlobDataSnapshot::GetMemoryUsage() const {
   return memory;
 }
 
+void PrintTo(const BlobDataSnapshot& x, std::ostream* os) {
+  DCHECK(os);
+  *os << "<BlobDataSnapshot>{uuid: " << x.uuid()
+      << ", content_type: " << x.content_type_
+      << ", content_disposition: " << x.content_disposition_ << ", items: [";
+  for (const auto& item : x.items_) {
+    PrintTo(*item, os);
+    *os << ", ";
+  }
+  *os << "]}";
+}
+
 }  // namespace storage