Add events for configuring and adding new providers to FSP API.

chrome/browser/chromeos/file_system_provider/service.h

 // Copyright 2014 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_FILE_SYSTEM_PROVIDER_SERVICE_H_
 #define CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_SERVICE_H_
 
 #include <map>
 #include <string>
 #include <utility>
@@ skipping 75 matching lines @@
   base::File::Error MountFileSystem(const std::string& extension_id,
                                     const MountOptions& options);
 
   // Unmounts a file system with the specified |file_system_id| for the
   // |extension_id|. For success returns base::File::FILE_OK, otherwise an error
   // code.
   base::File::Error UnmountFileSystem(const std::string& extension_id,
                                       const std::string& file_system_id,
                                       UnmountReason reason);
 
-  // Requests unmounting of the file system. The callback is called when the
-  // request is accepted or rejected, with an error code. Returns false if the
-  // request could not been created, true otherwise.
+  // Requests unmounting of the file system. Returns false if the request could
+  // not been created, true otherwise.
   bool RequestUnmount(const std::string& extension_id,
                       const std::string& file_system_id);
 
+  // Requests mounting a new file system by the providing extension with
+  // |extension_id|. Returns false if the request could not been created, true
+  // otherwise.
+  bool RequestMount(const std::string& extension_id);
+
   // Returns a list of information of all currently provided file systems. All
   // items are copied.
   std::vector<ProvidedFileSystemInfo> GetProvidedFileSystemInfoList();
 
   // Returns a provided file system with |file_system_id|, handled by
   // the extension with |extension_id|. If not found, then returns NULL.
   ProvidedFileSystemInterface* GetProvidedFileSystem(
       const std::string& extension_id,
       const std::string& file_system_id);
 
@@ skipping 74 matching lines @@
   base::ThreadChecker thread_checker_;
 
   base::WeakPtrFactory<Service> weak_ptr_factory_;
   DISALLOW_COPY_AND_ASSIGN(Service);
 };
 
 }  // namespace file_system_provider
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_SERVICE_H_