Move WriteFile and WriteFileDescriptor from file_util to base namespace.

chrome/common/extensions/api/storage/storage_schema_manifest_handler_unittest.cc

Index: chrome/common/extensions/api/storage/storage_schema_manifest_handler_unittest.cc
diff --git a/chrome/common/extensions/api/storage/storage_schema_manifest_handler_unittest.cc b/chrome/common/extensions/api/storage/storage_schema_manifest_handler_unittest.cc
index 10300f3d523389eed7245fa80d0f9171e7b4649b..29d27f86765abafe20219f00db462fc8e4e44e3e 100644
--- a/chrome/common/extensions/api/storage/storage_schema_manifest_handler_unittest.cc
+++ b/chrome/common/extensions/api/storage/storage_schema_manifest_handler_unittest.cc
@@ -46,7 +46,7 @@ class StorageSchemaManifestHandlerTest : public testing::Test {
     if (schema.empty()) {
       base::DeleteFile(schema_path, false);
     } else {
-      if (file_util::WriteFile(schema_path, schema.data(), schema.size()) !=
+      if (base::WriteFile(schema_path, schema.data(), schema.size()) !=
           static_cast<int>(schema.size())) {
         return NULL;
       }