Move WriteFile and WriteFileDescriptor from file_util to base namespace.

chrome/browser/extensions/sandboxed_unpacker.cc

Index: chrome/browser/extensions/sandboxed_unpacker.cc
diff --git a/chrome/browser/extensions/sandboxed_unpacker.cc b/chrome/browser/extensions/sandboxed_unpacker.cc
index f7625e70f468a9159249e1e6af1edb82f5891193..618cb36c0f4b2565d425dd814118074020d3ab1f 100644
--- a/chrome/browser/extensions/sandboxed_unpacker.cc
+++ b/chrome/browser/extensions/sandboxed_unpacker.cc
@@ -132,7 +132,7 @@ bool VerifyJunctionFreeLocation(base::FilePath* temp_dir) {
   // NormalizeFilePath requires a non-empty file, so write some data.
   // If you change the exit points of this function please make sure all
   // exit points delete this temp file!
-  if (file_util::WriteFile(temp_file, ".", 1) != 1)
+  if (base::WriteFile(temp_file, ".", 1) != 1)
     return false;
 
   base::FilePath normalized_temp_file;
@@ -629,7 +629,7 @@ base::DictionaryValue* SandboxedUnpacker::RewriteManifestFile(
   base::FilePath manifest_path =
       extension_root_.Append(kManifestFilename);
   int size = base::checked_cast<int>(manifest_json.size());
-  if (file_util::WriteFile(manifest_path, manifest_json.data(), size) != size) {
+  if (base::WriteFile(manifest_path, manifest_json.data(), size) != size) {
     // Error saving manifest.json.
     ReportFailure(
         ERROR_SAVING_MANIFEST_JSON,
@@ -742,7 +742,7 @@ bool SandboxedUnpacker::RewriteImageFiles(SkBitmap* install_icon) {
     // so we can be sure the directory exists.
     const char* image_data_ptr = reinterpret_cast<const char*>(&image_data[0]);
     int size = base::checked_cast<int>(image_data.size());
-    if (file_util::WriteFile(path, image_data_ptr, size) != size) {
+    if (base::WriteFile(path, image_data_ptr, size) != size) {
       // Error saving theme image.
       ReportFailure(
           ERROR_SAVING_THEME_IMAGE,
@@ -811,7 +811,7 @@ bool SandboxedUnpacker::RewriteCatalogFiles() {
     // Note: we're overwriting existing files that the utility process read,
     // so we can be sure the directory exists.
     int size = base::checked_cast<int>(catalog_json.size());
-    if (file_util::WriteFile(path, catalog_json.c_str(), size) != size) {
+    if (base::WriteFile(path, catalog_json.c_str(), size) != size) {
       // Error saving catalog.
       ReportFailure(
           ERROR_SAVING_CATALOG,