Remove fileapi::FileSystemFileUtil dependency from chrome/ syncfs code

chrome/browser/sync_file_system/local/syncable_file_system_unittest.cc

 // Copyright 2013 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 "base/stl_util.h"
 #include "chrome/browser/sync_file_system/local/canned_syncable_file_system.h"
 #include "chrome/browser/sync_file_system/local/local_file_change_tracker.h"
 #include "chrome/browser/sync_file_system/local/local_file_sync_context.h"
 #include "chrome/browser/sync_file_system/local/sync_file_system_backend.h"
 #include "chrome/browser/sync_file_system/syncable_file_system_util.h"
 #include "content/public/test/sandbox_file_system_test_helper.h"
 #include "content/public/test/test_browser_thread_bundle.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include "webkit/browser/fileapi/async_file_test_helper.h"
 #include "webkit/browser/fileapi/file_system_context.h"
-#include "webkit/browser/fileapi/file_system_file_util.h"
 #include "webkit/browser/fileapi/file_system_operation_context.h"
 #include "webkit/browser/fileapi/isolated_context.h"
 #include "webkit/browser/quota/quota_manager.h"
 #include "webkit/common/fileapi/file_system_types.h"
 #include "webkit/common/quota/quota_types.h"
 
 using base::PlatformFileError;
 using fileapi::FileSystemContext;
 using fileapi::FileSystemOperationContext;
 using fileapi::FileSystemURL;
@@ skipping 232 matching lines @@
 
   // Set up another (non-syncable) local file system.
   SandboxFileSystemTestHelper other_file_system_(
       GURL("http://foo.com/"), fileapi::kFileSystemTypeTemporary);
   other_file_system_.SetUp(file_system_.file_system_context());
 
   // Create directory '/a' and file '/a/b' in the other file system.
   const FileSystemURL kSrcDir = other_file_system_.CreateURLFromUTF8("/a");
   const FileSystemURL kSrcChild = other_file_system_.CreateURLFromUTF8("/a/b");
 
-  bool created = false;
-  scoped_ptr<FileSystemOperationContext> operation_context;
-
-  operation_context.reset(other_file_system_.NewOperationContext());
-  operation_context->set_allowed_bytes_growth(1024);
   EXPECT_EQ(base::PLATFORM_FILE_OK,
-            other_file_system_.file_util()->CreateDirectory(
-                operation_context.get(),
-                kSrcDir, false /* exclusive */, false /* recursive */));
-
-  operation_context.reset(other_file_system_.NewOperationContext());
-  operation_context->set_allowed_bytes_growth(1024);
+            fileapi::AsyncFileTestHelper::CreateDirectory(
+                other_file_system_.file_system_context(), kSrcDir));
   EXPECT_EQ(base::PLATFORM_FILE_OK,
-            other_file_system_.file_util()->EnsureFileExists(
-                operation_context.get(), kSrcChild, &created));
-  EXPECT_TRUE(created);
+            fileapi::AsyncFileTestHelper::CreateFile(
+                other_file_system_.file_system_context(), kSrcChild));
 
   // Now try copying the directory into the syncable file system, which should
   // fail if directory operation is disabled. (http://crbug.com/161442)
   EXPECT_NE(base::PLATFORM_FILE_OK,
             file_system_.Copy(kSrcDir, URL("dest")));
 
   other_file_system_.TearDown();
   SetEnableSyncFSDirectoryOperation(was_enabled);
 }
 
 }  // namespace sync_file_system