[fsp] Create a RequestManager per a ProvidedFileSystem instance.

chrome/browser/chromeos/file_system_provider/fake_provided_file_system.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_FAKE_PROVIDED_FILE_SYSTEM_H_
 #define CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_FAKE_PROVIDED_FILE_SYSTEM_H_
 
 #include <string>
 
 #include "chrome/browser/chromeos/file_system_provider/provided_file_system_info.h"
@@ skipping 13 matching lines @@
 class FakeProvidedFileSystem : public ProvidedFileSystemInterface {
  public:
   explicit FakeProvidedFileSystem(
       const ProvidedFileSystemInfo& file_system_info);
   virtual ~FakeProvidedFileSystem();
 
   // ProvidedFileSystemInterface overrides.
   virtual bool RequestUnmount(
       const fileapi::AsyncFileUtil::StatusCallback& callback) OVERRIDE;
   virtual const ProvidedFileSystemInfo& GetFileSystemInfo() const OVERRIDE;
+  virtual RequestManager* GetRequestManager() OVERRIDE;
 
-  // Factory callback, to be used in Service::SetFileSystemFactory(). Both
-  // |event_router| and |request_manager| arguments can be NULL.
+  // Factory callback, to be used in Service::SetFileSystemFactory(). The
+  // |event_router| argument can be NULL.
   static ProvidedFileSystemInterface* Create(
       extensions::EventRouter* event_router,
-      RequestManager* request_manager,
       const ProvidedFileSystemInfo& file_system_info);
 
  private:
   ProvidedFileSystemInfo file_system_info_;
   DISALLOW_COPY_AND_ASSIGN(FakeProvidedFileSystem);
 };
 
 }  // namespace file_system_provider
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_FAKE_PROVIDED_FILE_SYSTEM_H_