[fsp] Create a RequestManager per a ProvidedFileSystem instance.

chrome/browser/chromeos/file_system_provider/provided_file_system.cc

 // 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.
 
 #include "chrome/browser/chromeos/file_system_provider/provided_file_system.h"
 
 #include "base/files/file.h"
 #include "base/values.h"
 #include "chrome/browser/chromeos/file_system_provider/request_manager.h"
 #include "chrome/common/extensions/api/file_system_provider.h"
@@ skipping 19 matching lines @@
     const fileapi::AsyncFileUtil::StatusCallback& callback,
     scoped_ptr<base::DictionaryValue> /* result */,
     bool /* has_next */) {
   callback.Run(base::File::FILE_OK);
 }
 
 }  // namespace
 
 ProvidedFileSystem::ProvidedFileSystem(
     extensions::EventRouter* event_router,
-    RequestManager* request_manager,
     const ProvidedFileSystemInfo& file_system_info)
-    : event_router_(event_router),
-      request_manager_(request_manager),
-      file_system_info_(file_system_info) {}
+    : event_router_(event_router), file_system_info_(file_system_info) {}
 
 ProvidedFileSystem::~ProvidedFileSystem() {}
 
 bool ProvidedFileSystem::RequestUnmount(
     const fileapi::AsyncFileUtil::StatusCallback& callback) {
-  int request_id = request_manager_->CreateRequest(
-      file_system_info_.extension_id(),
-      file_system_info_.file_system_id(),
-      base::Bind(&OnRequestUnmountSuccess, callback),
-      callback);
+  int request_id = request_manager_.CreateRequest(
+      base::Bind(&OnRequestUnmountSuccess, callback), callback);
 
   if (!request_id)
     return false;
 
   scoped_ptr<base::ListValue> values(
       CreateRequestValues(file_system_info_.file_system_id(), request_id));
 
   event_router_->DispatchEventToExtension(
       file_system_info_.extension_id(),
       make_scoped_ptr(new extensions::Event(
           extensions::api::file_system_provider::OnUnmountRequested::kEventName,
           values.Pass())));
 
   return true;
 }
 
 const ProvidedFileSystemInfo& ProvidedFileSystem::GetFileSystemInfo() const {
   return file_system_info_;
 }
 
+RequestManager* ProvidedFileSystem::GetRequestManager() {
+  return &request_manager_;
+}
+
 }  // namespace file_system_provider
 }  // namespace chromeos