[Refactor] to rename and re-layer the file_util stack layers.

webkit/fileapi/quota_file_util.cc

 // Copyright (c) 2011 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 "webkit/fileapi/quota_file_util.h"
 
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "webkit/fileapi/file_system_context.h"
 #include "webkit/fileapi/file_system_operation_context.h"
 #include "webkit/fileapi/file_system_path_manager.h"
 #include "webkit/fileapi/file_system_quota_util.h"
+#include "webkit/fileapi/native_file_util.h"
 #include "webkit/quota/quota_manager.h"
 
 using quota::QuotaManagerProxy;
 
 namespace fileapi {
 
 const int64 QuotaFileUtil::kNoLimit = kint64max;
 
 namespace {
 
@@ skipping 38 matching lines @@
   operation_context->set_allowed_bytes_growth(
       operation_context->allowed_bytes_growth() - growth);
   if (quota_util)
     quota_util->UpdateOriginUsageOnFileThread(
         quota_manager_proxy, origin_url, type, growth);
 }
 
 }  // namespace (anonymous)
 
 QuotaFileUtil::QuotaFileUtil(FileSystemFileUtil* underlying_file_util)
-    : underlying_file_util_(underlying_file_util) {
+    : FileSystemFileUtil(underlying_file_util) {
 }
 
 QuotaFileUtil::~QuotaFileUtil() {
 }
 
 // static
 QuotaFileUtil* QuotaFileUtil::CreateDefault() {
-  return new QuotaFileUtil(new FileSystemFileUtil());
+  return new QuotaFileUtil(new NativeFileUtil());
+}
+
+base::PlatformFileError QuotaFileUtil::Truncate(
+    FileSystemOperationContext* fs_context,
+    const FilePath& path,
+    int64 length) {
+  int64 allowed_bytes_growth = fs_context->allowed_bytes_growth();
+
+  int64 growth = 0;
+  base::PlatformFileInfo file_info;
+  if (!file_util::GetFileInfo(path, &file_info))
+    return base::PLATFORM_FILE_ERROR_FAILED;
+
+  growth = length - file_info.size;
+  if (allowed_bytes_growth != kNoLimit &&
+      growth > 0 && growth > allowed_bytes_growth)
+    return base::PLATFORM_FILE_ERROR_NO_SPACE;
+
+  base::PlatformFileError error = underlying_file_util()->Truncate(
+      fs_context, path, length);
+
+  if (error == base::PLATFORM_FILE_OK)
+    NotifyUpdate(fs_context,
+                 fs_context->src_origin_url(),
+                 fs_context->src_type(),
+                 growth);
+
+  return error;
 }
 
 base::PlatformFileError QuotaFileUtil::CopyOrMoveFile(
     FileSystemOperationContext* fs_context,
     const FilePath& src_file_path,
     const FilePath& dest_file_path,
     bool copy) {
   DCHECK(fs_context);
 
   int64 growth = 0;
 
   // It assumes copy/move operations are always in the same fs currently.
   // TODO(dmikurube): Do quota check if moving between different fs.
   if (copy) {
     int64 allowed_bytes_growth = fs_context->allowed_bytes_growth();
     // The third argument (growth) is not used for now.
     if (!CanCopy(src_file_path, dest_file_path, allowed_bytes_growth, &growth))
       return base::PLATFORM_FILE_ERROR_NO_SPACE;
   } else {
     base::PlatformFileInfo dest_file_info;
     if (!file_util::GetFileInfo(dest_file_path, &dest_file_info))
       dest_file_info.size = 0;
     growth = -dest_file_info.size;
   }
 
-  base::PlatformFileError error = underlying_file_util_->CopyOrMoveFile(
+  base::PlatformFileError error = underlying_file_util()->CopyOrMoveFile(
       fs_context, src_file_path, dest_file_path, copy);
 
   if (error == base::PLATFORM_FILE_OK) {
     // TODO(kinuko): For cross-filesystem move case, call this with -growth
     // for source and growth for dest.
     NotifyUpdate(fs_context,
                  fs_context->dest_origin_url(),
                  fs_context->dest_type(),
                  growth);
   }
 
   return error;
 }
 
 base::PlatformFileError QuotaFileUtil::DeleteFile(
     FileSystemOperationContext* fs_context,
     const FilePath& file_path) {
   DCHECK(fs_context);
 
   int64 growth = 0;
   base::PlatformFileInfo file_info;
   if (!file_util::GetFileInfo(file_path, &file_info))
     file_info.size = 0;
   growth = -file_info.size;
 
-  base::PlatformFileError error = underlying_file_util_->DeleteFile(
+  base::PlatformFileError error = underlying_file_util()->DeleteFile(
       fs_context, file_path);
 
   if (error == base::PLATFORM_FILE_OK)
     NotifyUpdate(fs_context,
                  fs_context->src_origin_url(),
                  fs_context->src_type(),
                  growth);
 
   return error;
 }
 
-base::PlatformFileError QuotaFileUtil::Truncate(
-    FileSystemOperationContext* fs_context,
-    const FilePath& path,
-    int64 length) {
-  int64 allowed_bytes_growth = fs_context->allowed_bytes_growth();
-
-  int64 growth = 0;
-  base::PlatformFileInfo file_info;
-  if (!file_util::GetFileInfo(path, &file_info))
-    return base::PLATFORM_FILE_ERROR_FAILED;
-
-  growth = length - file_info.size;
-  if (allowed_bytes_growth != kNoLimit &&
-      growth > 0 && growth > allowed_bytes_growth)
-    return base::PLATFORM_FILE_ERROR_NO_SPACE;
-
-  base::PlatformFileError error = underlying_file_util_->Truncate(
-      fs_context, path, length);
-
-  if (error == base::PLATFORM_FILE_OK)
-    NotifyUpdate(fs_context,
-                 fs_context->src_origin_url(),
-                 fs_context->src_type(),
-                 growth);
-
-  return error;
-}
-
 }  // namespace fileapi