Adding URLResponse Disk Cache to mojo.

shell/application_manager/network_fetcher.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 SHELL_APPLICATION_MANAGER_NETWORK_FETCHER_H_
 #define SHELL_APPLICATION_MANAGER_NETWORK_FETCHER_H_
 
 #include "shell/application_manager/fetcher.h"
 
 #include "base/files/file_path.h"
 #include "base/memory/weak_ptr.h"
 #include "mojo/services/network/public/interfaces/url_loader.mojom.h"
+#include "mojo/services/url_response_disk_cache/public/interfaces/url_response_disk_cache.mojom.h"
 #include "url/gurl.h"
 
 namespace mojo {
 class NetworkService;
 }  // namespace mojo
 
 namespace shell {
 
 // Implements Fetcher for http[s] files.
 class NetworkFetcher : public Fetcher {
  public:
   NetworkFetcher(bool disable_cache,
                  const GURL& url,
                  mojo::NetworkService* network_service,
+                 mojo::url_response_disk_cache::URLResponseDiskCache*
+                     url_response_disk_cache,
                  const FetchCallback& loader_callback);
 
   ~NetworkFetcher() override;
 
  private:
   // TODO(hansmuller): Revisit this when a real peek operation is available.
   static const MojoDeadline kPeekTimeout = MOJO_DEADLINE_INDEFINITE;
 
   const GURL& GetURL() const override;
   GURL GetRedirectURL() const override;
 
   mojo::URLResponsePtr AsURLResponse(base::TaskRunner* task_runner,
                                      uint32_t skip) override;
 
   static void RecordCacheToURLMapping(const base::FilePath& path,
                                       const GURL& url);
 
   // AppIds should be be both predictable and unique, but any hash would work.
   // Currently we use sha256 from crypto/secure_hash.h
   static bool ComputeAppId(const base::FilePath& path,
                            std::string* digest_string);
 
   static bool RenameToAppId(const GURL& url,
                             const base::FilePath& old_path,
                             base::FilePath* new_path);
 
-  void CopyCompleted(base::Callback<void(const base::FilePath&, bool)> callback,
-                     bool success);
+  void OnFileRetrievedFromCache(
+      base::Callback<void(const base::FilePath&, bool)> callback,
+      mojo::Array<uint8_t> path_as_array,
+      mojo::Array<uint8_t> cache_dir);
 
   void AsPath(
       base::TaskRunner* task_runner,
       base::Callback<void(const base::FilePath&, bool)> callback) override;
 
   std::string MimeType() override;
 
   bool HasMojoMagic() override;
 
   bool PeekFirstLine(std::string* line) override;
 
   void StartNetworkRequest(const GURL& url,
                            mojo::NetworkService* network_service);
 
   void OnLoadComplete(mojo::URLResponsePtr response);
 
   bool disable_cache_;
   const GURL url_;
+  mojo::url_response_disk_cache::URLResponseDiskCache* url_response_disk_cache_;
   mojo::URLLoaderPtr url_loader_;
   mojo::URLResponsePtr response_;
   base::FilePath path_;
   base::WeakPtrFactory<NetworkFetcher> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(NetworkFetcher);
 };
 
 }  // namespace shell
 
 #endif  // SHELL_APPLICATION_MANAGER_NETWORK_FETCHER_H_