Make MountPointProvider pluggable from outside webkit/fileapi

webkit/fileapi/local_file_system_quota_unittest.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.
 
 // This test checks the entire behavior of FileSystem usage and quota, such as:
 // 1) the actual size of files on disk,
 // 2) the described size in .usage, and
 // 3) the result of QuotaManager::GetUsageAndQuota.
 
 #include "base/bind.h"
@@ skipping 45 matching lines @@
         work_dir_.path().AppendASCII("filesystem");
     ASSERT_TRUE(file_util::CreateDirectory(filesystem_dir_path));
 
     quota_manager_ = new quota::QuotaManager(
         false /* is_incognito */,
         filesystem_dir_path,
         base::MessageLoopProxy::current(),
         base::MessageLoopProxy::current(),
         NULL);
 
-    test_helper_.SetUp(filesystem_dir_path,
-                       false /* unlimited quota */,
-                       quota_manager_->proxy());
+    test_helper_.SetUp(filesystem_dir_path, quota_manager_->proxy());
   }
 
   virtual void TearDown() OVERRIDE {
     quota_manager_ = NULL;
     test_helper_.TearDown();
   }
 
   LocalFileSystemOperation* NewOperation() {
     return test_helper_.NewOperation();
   }
@@ skipping 261 matching lines @@
 
   EXPECT_EQ(2 * child_file_size + 3 * grandchild_file_size, ActualFileSize());
   EXPECT_EQ(expected_usage, SizeByQuotaUtil());
   GetUsageAndQuotaFromQuotaManager();
   EXPECT_EQ(quota::kQuotaStatusOk, quota_status());
   EXPECT_EQ(expected_usage, usage());
   ASSERT_LT(expected_usage, quota());
 }
 
 }  // namespace fileapi