arc: Use the MIME type returned by the container to handle content URLs

chrome/browser/chromeos/arc/fileapi/arc_file_system_operation_runner.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 CHROME_BROWSER_CHROMEOS_ARC_FILEAPI_ARC_FILE_SYSTEM_OPERATION_RUNNER_H_
 #define CHROME_BROWSER_CHROMEOS_ARC_FILEAPI_ARC_FILE_SYSTEM_OPERATION_RUNNER_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 37 matching lines @@
 //   failing immediately.
 //
 // All member functions must be called on the UI thread.
 class ArcFileSystemOperationRunner
     : public ArcService,
       public mojom::FileSystemHost,
       public ArcSessionManager::Observer,
       public InstanceHolder<mojom::FileSystemInstance>::Observer {
  public:
   using GetFileSizeCallback = mojom::FileSystemInstance::GetFileSizeCallback;
+  using GetMimeTypeCallback = mojom::FileSystemInstance::GetMimeTypeCallback;
   using OpenFileToReadCallback =
       mojom::FileSystemInstance::OpenFileToReadCallback;
   using GetDocumentCallback = mojom::FileSystemInstance::GetDocumentCallback;
   using GetChildDocumentsCallback =
       mojom::FileSystemInstance::GetChildDocumentsCallback;
   using AddWatcherCallback = base::Callback<void(int64_t watcher_id)>;
   using RemoveWatcherCallback = base::Callback<void(bool success)>;
   using ChangeType = storage::WatcherManager::ChangeType;
   using WatcherCallback = base::Callback<void(ChangeType type)>;
 
@@ skipping 24 matching lines @@
   ArcFileSystemOperationRunner(ArcBridgeService* bridge_service,
                                const Profile* profile);
   ~ArcFileSystemOperationRunner() override;
 
   // Adds or removes observers.
   void AddObserver(Observer* observer);
   void RemoveObserver(Observer* observer);
 
   // Runs file system operations. See file_system.mojom for documentation.
   void GetFileSize(const GURL& url, const GetFileSizeCallback& callback);
+  void GetMimeType(const GURL& url, const GetMimeTypeCallback& callback);
   void OpenFileToRead(const GURL& url, const OpenFileToReadCallback& callback);
   void GetDocument(const std::string& authority,
                    const std::string& document_id,
                    const GetDocumentCallback& callback);
   void GetChildDocuments(const std::string& authority,
                          const std::string& parent_document_id,
                          const GetChildDocumentsCallback& callback);
   void AddWatcher(const std::string& authority,
                   const std::string& document_id,
                   const WatcherCallback& watcher_callback,
@@ skipping 53 matching lines @@
   mojo::Binding<mojom::FileSystemHost> binding_;
 
   base::WeakPtrFactory<ArcFileSystemOperationRunner> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ArcFileSystemOperationRunner);
 };
 
 }  // namespace arc
 
 #endif  // CHROME_BROWSER_CHROMEOS_ARC_FILEAPI_ARC_FILE_SYSTEM_OPERATION_RUNNER_H_