drive: Trigger "fast fetch" if remote update came during full loading.

chrome/browser/chromeos/drive/change_list_loader_unittest.cc

 // Copyright 2013 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 "chrome/browser/chromeos/drive/change_list_loader.h"
 
 #include "base/callback_helpers.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/prefs/testing_pref_service.h"
@@ skipping 230 matching lines @@
 
 TEST_F(ChangeListLoaderTest, Load_LocalMetadataAvailable) {
   // Prepare metadata.
   FileError error = FILE_ERROR_FAILED;
   change_list_loader_->LoadIfNeeded(
       google_apis::test_util::CreateCopyResultCallback(&error));
   base::RunLoop().RunUntilIdle();
   EXPECT_EQ(FILE_ERROR_OK, error);
 
   // Reset loader.
+  about_resource_loader_.reset(new AboutResourceLoader(scheduler_.get()));
   change_list_loader_.reset(
       new ChangeListLoader(logger_.get(),
                            base::MessageLoopProxy::current().get(),
                            metadata_.get(),
                            scheduler_.get(),
                            about_resource_loader_.get(),
                            loader_controller_.get()));
 
   // Add a file to the service.
   scoped_ptr<google_apis::FileResource> gdata_entry = AddNewFile("New File");
@@ skipping 122 matching lines @@
   TestChangeListLoaderObserver observer(change_list_loader_.get());
   FileError check_for_updates_error = FILE_ERROR_FAILED;
   change_list_loader_->CheckForUpdates(
       google_apis::test_util::CreateCopyResultCallback(
           &check_for_updates_error));
   base::RunLoop().RunUntilIdle();
 
   // Update is pending due to the lock.
   EXPECT_TRUE(observer.changed_files().empty());
 
-  // Unlock the loader, this should resume the pending udpate.
+  // Unlock the loader, this should resume the pending update.
   lock.reset();
   base::RunLoop().RunUntilIdle();
   EXPECT_TRUE(
       observer.changed_files().CountDirectory(util::GetDriveMyDriveRootPath()));
 }
 
 }  // namespace internal
 }  // namespace drive