Move webkit/blob to new locations.

webkit/blob/blob_storage_context.h

-// Copyright (c) 2013 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 WEBKIT_BLOB_BLOB_STORAGE_CONTEXT_H_
-#define WEBKIT_BLOB_BLOB_STORAGE_CONTEXT_H_
-
-#include <map>
-#include <string>
-
-#include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/memory/weak_ptr.h"
-#include "webkit/blob/blob_data.h"
-#include "webkit/storage/webkit_storage_export.h"
-
-class GURL;
-
-namespace base {
-class FilePath;
-class Time;
-}
-
-namespace webkit_blob {
-
-class BlobDataHandle;
-
-// This class handles the logistics of blob Storage within the browser process,
-// and maintains a mapping from blob uuid to the data. The class is single
-// threaded and should only be used on the IO thread.
-// In chromium, there is one instance per profile.
-class WEBKIT_STORAGE_EXPORT BlobStorageContext
-    : public base::SupportsWeakPtr<BlobStorageContext> {
- public:
-  BlobStorageContext();
-  ~BlobStorageContext();
-
-  scoped_ptr<BlobDataHandle> GetBlobDataFromUUID(const std::string& uuid);
-  scoped_ptr<BlobDataHandle> GetBlobDataFromPublicURL(const GURL& url);
-
-  // Useful for coining blobs from within the browser process. If the
-  // blob cannot be added due to memory consumption, returns NULL.
-  scoped_ptr<BlobDataHandle> AddFinishedBlob(const BlobData* blob_data);
-
- private:
-  friend class BlobDataHandle;
-  friend class BlobStorageHost;
-
-  enum EntryFlags {
-    BEING_BUILT = 1 << 0,
-    EXCEEDED_MEMORY = 1 << 1,
-  };
-
-  struct BlobMapEntry {
-    int refcount;
-    int flags;
-    scoped_refptr<BlobData> data;
-
-    BlobMapEntry();
-    BlobMapEntry(int refcount, int flags, BlobData* data);
-    ~BlobMapEntry();
-  };
-
-  typedef std::map<std::string, BlobMapEntry>
-      BlobMap;
-  typedef std::map<GURL, std::string> BlobURLMap;
-
-  void StartBuildingBlob(const std::string& uuid);
-  void AppendBlobDataItem(const std::string& uuid,
-                          const BlobData::Item& data_item);
-  void FinishBuildingBlob(const std::string& uuid, const std::string& type);
-  void CancelBuildingBlob(const std::string& uuid);
-  void IncrementBlobRefCount(const std::string& uuid);
-  void DecrementBlobRefCount(const std::string& uuid);
-  void RegisterPublicBlobURL(const GURL& url, const std::string& uuid);
-  void RevokePublicBlobURL(const GURL& url);
-
-  bool ExpandStorageItems(BlobData* target_blob_data,
-                          BlobData* src_blob_data,
-                          uint64 offset,
-                          uint64 length);
-  bool AppendBytesItem(BlobData* target_blob_data,
-                       const char* data, int64 length);
-  void AppendFileItem(BlobData* target_blob_data,
-                      const base::FilePath& file_path,
-                      uint64 offset, uint64 length,
-                      const base::Time& expected_modification_time);
-  void AppendFileSystemFileItem(
-      BlobData* target_blob_data,
-      const GURL& url, uint64 offset, uint64 length,
-      const base::Time& expected_modification_time);
-
-  bool IsInUse(const std::string& uuid);
-  bool IsBeingBuilt(const std::string& uuid);
-  bool IsUrlRegistered(const GURL& blob_url);
-
-  BlobMap blob_map_;
-  BlobURLMap public_blob_urls_;
-
-  // Used to keep track of how much memory is being utitlized for blob data,
-  // we count only the items of TYPE_DATA which are held in memory and not
-  // items of TYPE_FILE.
-  int64 memory_usage_;
-
-  DISALLOW_COPY_AND_ASSIGN(BlobStorageContext);
-};
-
-}  // namespace webkit_blob
-
-#endif  // WEBKIT_BLOB_BLOB_STORAGE_CONTEXT_H_