WIP POC blob transport over mojo

storage/browser/blob/blob_registry_impl.h

+// Copyright 2017 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_BLOB_REGISTRY_IMPL_H_
+#define STORAGE_BROWSER_BLOB_BLOB_REGISTRY_IMPL_H_
+
+#include "mojo/public/cpp/bindings/binding_set.h"
+#include "services/service_manager/public/cpp/bind_source_info.h"
+#include "storage/browser/blob/blob_memory_controller.h"
+#include "storage/browser/storage_browser_export.h"
+#include "third_party/WebKit/public/platform/blobs.mojom.h"
+
+namespace storage {
+
+class BlobDataBuilder;
+class BlobStorageContext;
+
+class STORAGE_EXPORT BlobRegistryImpl : public mojom::BlobRegistry {
+ public:
+  explicit BlobRegistryImpl(BlobStorageContext* context);
+  ~BlobRegistryImpl() override;
+
+  void Bind(const service_manager::BindSourceInfo& source_info,
+            mojom::BlobRegistryRequest request);
+
+  void Register(mojom::BlobRequest blob,
+                const std::string& uuid,
+                const std::string& content_type,
+                const std::string& content_disposition,
+                std::vector<mojom::DataElementPtr> elements,
+                RegisterCallback callback) override;
+  void DeprecatedGetBlob(const std::string& uuid,
+                         mojom::BlobRequest blob) override;
+
+ private:
+  void RegisterWithBlobUUIDs(mojom::BlobRequest blob,
+                             const std::string& uuid,
+                             const std::string& content_type,
+                             const std::string& content_disposition,
+                             std::vector<mojom::DataElementPtr> elements,
+                             std::vector<std::string> blob_uuids,
+                             RegisterCallback callback,
+                             const std::string& next_blob);
+
+  void OnReadyForDataStreams(
+      const std::string& uuid,
+      std::unique_ptr<BlobDataBuilder> builder,
+      std::list<std::pair<size_t, mojom::BytesProviderPtr>> future_data,
+      std::list<size_t> file_sizes,
+      BlobStatus status,
+      std::vector<BlobMemoryController::FileCreationInfo> file_info);
+  void OnReadDatastream(const std::string& uuid,
+                        base::OnceClosure next_read_callback,
+
+                        bool success);
+  void OnReadyForFileTransport(
+      const std::string& uuid,
+      std::unique_ptr<BlobDataBuilder> builder,
+      std::list<std::pair<size_t, mojom::BytesProviderPtr>> future_data,
+      std::list<size_t> file_sizes,
+      BlobStatus status,
+      std::vector<BlobMemoryController::FileCreationInfo> file_info);
+
+  void OnDataStreamDone(const std::string& uuid);
+  void OnFileDone(const std::string& uuid,
+                  BlobDataBuilder* builder,
+                  size_t item_index,
+                  mojom::BytesProviderPtr ptr,
+                  const scoped_refptr<ShareableFileReference>& file_reference,
+                  base::Optional<base::Time> time_file_modified);
+
+  BlobStorageContext* context_;
+
+  mojo::BindingSet<mojom::BlobRegistry> bindings_;
+
+  base::WeakPtrFactory<BlobRegistryImpl> weak_ptr_factory_;
+  DISALLOW_COPY_AND_ASSIGN(BlobRegistryImpl);
+};
+
+}  // namespace storage
+
+#endif  // STORAGE_BROWSER_BLOB_BLOB_REGISTRY_IMPL_H_