Mojo C++ bindings: switch components/filesystem mojom target to use STL types.

components/filesystem/public/cpp/prefs/filesystem_json_pref_store.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 "components/filesystem/public/cpp/prefs/filesystem_json_pref_store.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <utility>
@@ skipping 373 matching lines @@
 void FilesystemJsonPrefStore::OnTempFileRenamed(mojom::FileError err) {}
 
 void FilesystemJsonPrefStore::OnPreferencesReadStart() {
   directory_->ReadEntireFile(
       path_,
       Bind(&FilesystemJsonPrefStore::OnPreferencesFileRead, AsWeakPtr()));
 }
 
 void FilesystemJsonPrefStore::OnPreferencesFileRead(
     mojom::FileError err,
-    mojo::Array<uint8_t> contents) {
+    const std::vector<uint8_t>& contents) {
   std::unique_ptr<FilesystemJsonPrefStore::ReadResult> read_result(
       new FilesystemJsonPrefStore::ReadResult);
   // TODO(erg): Needs even better error handling.
   switch (err) {
     case mojom::FileError::IN_USE:
     case mojom::FileError::ACCESS_DENIED:
     case mojom::FileError::NOT_A_FILE: {
       read_only_ = true;
       break;
     }
@@ skipping 11 matching lines @@
           reinterpret_cast<char*>(&contents.front()), contents.size()));
       read_result->value = deserializer.Deserialize(&error_code, &error_msg);
       read_result->error = HandleReadErrors(read_result->value.get());
     }
   }
 
   OnFileRead(std::move(read_result));
 }
 
 }  // namespace filesystem