drive: Move FileSystem::LoadDirectoryIfNeeded to ChangeListLoader

chrome/browser/chromeos/drive/file_system_unittest.cc

Index: chrome/browser/chromeos/drive/file_system_unittest.cc
diff --git a/chrome/browser/chromeos/drive/file_system_unittest.cc b/chrome/browser/chromeos/drive/file_system_unittest.cc
index c004eeb88dcf82e02bd2765acb64d262219d8e75..38313ead46d51e431778e3507ba387b3187e6609 100644
--- a/chrome/browser/chromeos/drive/file_system_unittest.cc
+++ b/chrome/browser/chromeos/drive/file_system_unittest.cc
@@ -16,7 +16,6 @@
 #include "base/prefs/testing_pref_service.h"
 #include "base/run_loop.h"
 #include "chrome/browser/chromeos/drive/change_list_loader.h"
-#include "chrome/browser/chromeos/drive/change_list_processor.h"
 #include "chrome/browser/chromeos/drive/drive.pb.h"
 #include "chrome/browser/chromeos/drive/fake_free_disk_space_getter.h"
 #include "chrome/browser/chromeos/drive/file_system_observer.h"
@@ -138,8 +137,7 @@ class FileSystemTest : public testing::Test {
   // Loads the full resource list via FakeDriveService.
   bool LoadFullResourceList() {
     FileError error = FILE_ERROR_FAILED;
-    file_system_->change_list_loader_for_testing()->LoadIfNeeded(
-        internal::DirectoryFetchInfo(),
+    file_system_->change_list_loader_for_testing()->LoadForTesting(
         google_apis::test_util::CreateCopyResultCallback(&error));
     test_util::RunBlockingPoolTask();
     return error == FILE_ERROR_OK;