Make MountPointProvider pluggable from outside webkit/fileapi

content/browser/fileapi/browser_file_system_helper.cc

 // Copyright (c) 2012 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 "content/browser/fileapi/browser_file_system_helper.h"
 
 #include <string>
 #include <vector>
 
 #include "base/command_line.h"
@@ skipping 29 matching lines @@
   if (CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kAllowFileAccessFromFiles)) {
     additional_allowed_schemes.push_back(chrome::kFileScheme);
   }
   return FileSystemOptions(profile_mode, additional_allowed_schemes);
 }
 
 }  // namespace
 
 scoped_refptr<fileapi::FileSystemContext> CreateFileSystemContext(
-        const base::FilePath& profile_path, bool is_incognito,
-        fileapi::ExternalMountPoints* external_mount_points,
-        quota::SpecialStoragePolicy* special_storage_policy,
-        quota::QuotaManagerProxy* quota_manager_proxy) {
+    const base::FilePath& profile_path,
+    bool is_incognito,
+    fileapi::ExternalMountPoints* external_mount_points,
+    quota::SpecialStoragePolicy* special_storage_policy,
+    quota::QuotaManagerProxy* quota_manager_proxy) {
   base::SequencedWorkerPool* pool = BrowserThread::GetBlockingPool();
   base::SequencedWorkerPool::SequenceToken media_sequence_token =
       pool->GetNamedSequenceToken(fileapi::kMediaTaskRunnerName);
 
   scoped_ptr<fileapi::FileSystemTaskRunners> task_runners(
       new fileapi::FileSystemTaskRunners(
           BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO),
           BrowserThread::GetMessageLoopProxyForThread(BrowserThread::FILE),
           pool->GetSequencedTaskRunner(media_sequence_token)));
 
+  // Setting up additional mount point providers.
+  ScopedVector<fileapi::FileSystemMountPointProvider> additional_providers;
   return new fileapi::FileSystemContext(
       task_runners.Pass(),
       external_mount_points,
       special_storage_policy,
       quota_manager_proxy,
+      ScopedVector<fileapi::FileSystemMountPointProvider>(),
       profile_path,
       CreateBrowserFileSystemOptions(is_incognito));
 }
 
 bool CheckFileSystemPermissionsForProcess(
     fileapi::FileSystemContext* context, int process_id,
     const fileapi::FileSystemURL& url, int permissions,
     base::PlatformFileError* error) {
   DCHECK(error);
   *error = base::PLATFORM_FILE_OK;
@@ skipping 78 matching lines @@
   // for the file. (We first need to check if it can already be read not to
   // overwrite existing permissions)
   if (!ChildProcessSecurityPolicyImpl::GetInstance()->CanReadFile(
           process_id, *platform_path)) {
     ChildProcessSecurityPolicyImpl::GetInstance()->GrantReadFile(
         process_id, *platform_path);
   }
 }
 
 }  // namespace content