[BlobAsync] Disk support for blob storage

storage/browser/blob/blob_storage_registry.cc

Index: storage/browser/blob/blob_storage_registry.cc
diff --git a/storage/browser/blob/blob_storage_registry.cc b/storage/browser/blob/blob_storage_registry.cc
index a0f03b25fd42a73fbd3cff7e6358c33992c27243..2be9a975645ffcc9ec27d8d257ce5e7024bc6a17 100644
--- a/storage/browser/blob/blob_storage_registry.cc
+++ b/storage/browser/blob/blob_storage_registry.cc
@@ -38,19 +38,10 @@ GURL ClearBlobUrlRef(const GURL& url) {
 
 }  // namespace
 
-BlobStorageRegistry::Entry::Entry(int refcount, BlobState state)
-    : refcount(refcount), state(state) {}
+BlobStorageRegistry::Entry::Entry() {}
 
 BlobStorageRegistry::Entry::~Entry() {}
 
-bool BlobStorageRegistry::Entry::TestAndSetState(BlobState expected,
-                                                 BlobState set) {
-  if (state != expected)
-    return false;
-  state = set;
-  return true;
-}
-
 BlobStorageRegistry::BlobStorageRegistry() {}
 
 BlobStorageRegistry::~BlobStorageRegistry() {
@@ -64,7 +55,7 @@ BlobStorageRegistry::Entry* BlobStorageRegistry::CreateEntry(
     const std::string& content_type,
     const std::string& content_disposition) {
   DCHECK(!ContainsKey(blob_map_, uuid));
-  std::unique_ptr<Entry> entry(new Entry(1, BlobState::PENDING));
+  std::unique_ptr<Entry> entry(new Entry());
   entry->content_type = content_type;
   entry->content_disposition = content_disposition;
   Entry* entry_ptr = entry.get();