Move fileapi into its own component

webkit/fileapi/file_system_util.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 "webkit/fileapi/file_system_util.h"
 
 #include "build/build_config.h"
 
 #include "base/file_path.h"
 #include "base/logging.h"
@@ skipping 231 matching lines @@
 }
 
 FilePath StringToFilePath(const std::string& file_path_string) {
 #if defined(OS_WIN)
   return FilePath(UTF8ToUTF16(file_path_string));
 #elif defined(OS_POSIX)
   return FilePath(file_path_string);
 #endif
 }
 
+WebKit::WebFileError PlatformFileErrorToWebFileError(
+    base::PlatformFileError error_code) {
+  switch (error_code) {
+    case base::PLATFORM_FILE_ERROR_NOT_FOUND:
+      return WebKit::WebFileErrorNotFound;
+    case base::PLATFORM_FILE_ERROR_INVALID_OPERATION:
+    case base::PLATFORM_FILE_ERROR_EXISTS:
+    case base::PLATFORM_FILE_ERROR_NOT_EMPTY:
+      return WebKit::WebFileErrorInvalidModification;
+    case base::PLATFORM_FILE_ERROR_NOT_A_DIRECTORY:
+    case base::PLATFORM_FILE_ERROR_NOT_A_FILE:
+      return WebKit::WebFileErrorTypeMismatch;
+    case base::PLATFORM_FILE_ERROR_ACCESS_DENIED:
+      return WebKit::WebFileErrorNoModificationAllowed;
+    case base::PLATFORM_FILE_ERROR_FAILED:
+      return WebKit::WebFileErrorInvalidState;
+    case base::PLATFORM_FILE_ERROR_ABORT:
+      return WebKit::WebFileErrorAbort;
+    case base::PLATFORM_FILE_ERROR_SECURITY:
+      return WebKit::WebFileErrorSecurity;
+    case base::PLATFORM_FILE_ERROR_NO_SPACE:
+      return WebKit::WebFileErrorQuotaExceeded;
+    default:
+      return WebKit::WebFileErrorInvalidModification;
+  }
+}
+
 }  // namespace fileapi