[IndexedDB] Hold referenced to IDB::put blobs in the IDBRequest

content/browser/blob_storage/blob_dispatcher_host.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_BLOB_STORAGE_BLOB_DISPATCHER_HOST_H_
 #define CONTENT_BROWSER_BLOB_STORAGE_BLOB_DISPATCHER_HOST_H_
 
 #include <memory>
 #include <set>
 #include <string>
@@ skipping 29 matching lines @@
 // that process go away upon destruction of the instance.
 // This lives in the browser process, is single threaded (IO thread), and there
 // is one per child process.
 class CONTENT_EXPORT BlobDispatcherHost : public BrowserMessageFilter {
  public:
   BlobDispatcherHost(
       int process_id,
       scoped_refptr<ChromeBlobStorageContext> blob_storage_context,
       scoped_refptr<storage::FileSystemContext> file_system_context);
 
+  // Decrements the refcount for the given blob for this renderer.
+  void AckBlobRecievedFromIDB(const std::string& uuid);
+
   // BrowserMessageFilter implementation.
   void OnChannelClosing() override;
   bool OnMessageReceived(const IPC::Message& message) override;
 
  protected:
   ~BlobDispatcherHost() override;
 
  private:
   friend class base::RefCountedThreadSafe<BlobDispatcherHost>;
   friend class BlobDispatcherHostTest;
@@ skipping 79 matching lines @@
   // The set of public blob urls coined by this consumer.
   std::set<GURL> public_blob_urls_;
 
   scoped_refptr<ChromeBlobStorageContext> blob_storage_context_;
   storage::BlobTransportHost transport_host_;
 
   DISALLOW_COPY_AND_ASSIGN(BlobDispatcherHost);
 };
 }  // namespace content
 #endif  // CONTENT_BROWSER_BLOB_STORAGE_BLOB_DISPATCHER_HOST_H_