[BlobAsync] Moving async handling into BlobStorageContext & quota out.

storage/browser/blob/internal_blob_data.h

-// Copyright 2015 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 STORAGE_BROWSER_BLOB_INTERNAL_BLOB_DATA_H_
-#define STORAGE_BROWSER_BLOB_INTERNAL_BLOB_DATA_H_
-
-#include <stddef.h>
-
-#include <memory>
-#include <string>
-#include <vector>
-
-#include "base/macros.h"
-#include "base/memory/ref_counted.h"
-#include "storage/browser/blob/shareable_blob_data_item.h"
-
-namespace storage {
-class ViewBlobInternalsJob;
-
-// This class represents a blob in the BlobStorageContext.  It is constructed
-// using the internal Builder class.
-class InternalBlobData {
- public:
-  ~InternalBlobData();
-
- protected:
-  friend class BlobStorageContext;
-  friend class BlobStorageRegistry;
-  friend class ViewBlobInternalsJob;
-
-  // Removes the given blob uuid from the internal ShareableBlobDataItems.
-  // This is called when this blob is being destroyed.
-  void RemoveBlobFromShareableItems(const std::string& blob_uuid);
-
-  const std::vector<scoped_refptr<ShareableBlobDataItem>>& items() const;
-
-  // Gets the memory used by this blob that is not shared by other blobs. This
-  // also doesn't count duplicate items.
-  size_t GetUnsharedMemoryUsage() const;
-
-  // Gets the memory used by this blob.  Total memory includes memory of items
-  // possibly shared with other blobs, or items that appear multiple times in
-  // this blob. Unshared memory is memory used by this blob that is not shared
-  // by other blobs.
-  void GetMemoryUsage(size_t* total_memory, size_t* unshared_memory);
-
- private:
-  friend class Builder;
-  InternalBlobData();
-
-  std::string content_type_;
-  std::string content_disposition_;
-  std::vector<scoped_refptr<ShareableBlobDataItem>> items_;
-
-  class Builder {
-   public:
-    Builder();
-    ~Builder();
-
-    void AppendSharedBlobItem(scoped_refptr<ShareableBlobDataItem> item);
-
-    // Gets the memory used by this builder that is not shared with other blobs.
-    size_t GetNonsharedMemoryUsage() const;
-
-    // Removes the given blob uuid from the internal ShareableBlobDataItems.
-    // This is called on destruction of the blob if we're still building it.
-    void RemoveBlobFromShareableItems(const std::string& blob_uuid);
-
-    // The builder is invalid after calling this method.
-    std::unique_ptr<::storage::InternalBlobData> Build();
-
-   private:
-    std::unique_ptr<::storage::InternalBlobData> data_;
-
-    DISALLOW_COPY_AND_ASSIGN(Builder);
-  };
-
-  DISALLOW_COPY_AND_ASSIGN(InternalBlobData);
-};
-
-}  // namespace storage
-#endif  // STORAGE_BROWSER_BLOB_INTERNAL_BLOB_DATA_H_