Adding URLResponse Disk Cache to mojo.

services/url_response_disk_cache/url_response_disk_cache_impl.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 SERVICES_URL_RESPONSE_DISK_CACHE_URL_RESPONSE_DISK_CACHE_IMPL_H_
+#define SERVICES_URL_RESPONSE_DISK_CACHE_URL_RESPONSE_DISK_CACHE_IMPL_H_
+
+#include "base/files/file_path.h"
+#include "base/macros.h"
+#include "base/threading/sequenced_worker_pool.h"
+#include "mojo/public/cpp/bindings/strong_binding.h"
+#include "mojo/services/url_response_disk_cache/public/interfaces/url_response_disk_cache.mojom.h"
+
+namespace mojo {
+
+class URLResponseDiskCacheImpl : public URLResponseDiskCache {
+ public:
+  using FilePathPairCallback =
+      base::Callback<void(const base::FilePath&, const base::FilePath&)>;
+
+  URLResponseDiskCacheImpl(scoped_refptr<base::SequencedWorkerPool> worker_pool,
+                           const std::string& remote_application_url,
+                           InterfaceRequest<URLResponseDiskCache> request);
+  ~URLResponseDiskCacheImpl() override;
+
+ private:
+  // URLResponseDiskCache
+  void GetFile(mojo::URLResponsePtr response,
+               const GetFileCallback& callback) override;
+  void GetExtractedContent(
+      mojo::URLResponsePtr response,
+      const GetExtractedContentCallback& callback) override;
+
+  // As |GetFile|, but uses FilePath instead of mojo arrays.
+  void GetFileInternal(mojo::URLResponsePtr response,
+                       const FilePathPairCallback& callback);
+
+  // Internal implementation of |GetExtractedContent|. The parameters are:
+  // |callback|: The callback to return values to the caller. It uses FilePath
+  //             instead of mojo arrays.
+  // |cache_dir|: The cache dir to return to the consumer.
+  // |content|: The content of the body of the response.
+  // |dir|: The base directory under which all data for the response is stored.
+  void GetExtractedContentInternal(const FilePathPairCallback& callback,
+                                   const base::FilePath& cache_dir,
+                                   const base::FilePath& content,
+                                   const base::FilePath& dir);
+
+  scoped_refptr<base::SequencedWorkerPool> worker_pool_;
+  base::FilePath base_directory_;
+  StrongBinding<URLResponseDiskCache> binding_;
+
+  DISALLOW_COPY_AND_ASSIGN(URLResponseDiskCacheImpl);
+};
+
+}  // namespace mojo
+
+#endif  // SERVICES_URL_RESPONSE_DISK_CACHE_URL_RESPONSE_DISK_CACHE_IMPL_H_