drive: Return NOT_FOUND from FakeDriveService after the entry gets deleted

chrome/browser/sync_file_system/drive_backend_v1/fake_drive_uploader.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/sync_file_system/drive_backend_v1/fake_drive_uploader.h"
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 31 matching lines @@
       base::Bind(callback,
                  google_apis::HTTP_SUCCESS,
                  GURL(),
                  base::Passed(&entry)));
 }
 
 void DidGetResourceEntryForUploadExisting(
     const UploadCompletionCallback& callback,
     GDataErrorCode error,
     scoped_ptr<ResourceEntry> entry) {
-  ASSERT_EQ(google_apis::HTTP_SUCCESS, error);
-  ASSERT_TRUE(entry);
   base::MessageLoopProxy::current()->PostTask(
       FROM_HERE,
       base::Bind(callback,
-                 google_apis::HTTP_SUCCESS,
+                 error,
                  GURL(),
                  base::Passed(&entry)));
 }
 
 }  // namespace
 
 FakeDriveServiceWrapper::FakeDriveServiceWrapper()
   : make_directory_conflict_(false) {}
 
 FakeDriveServiceWrapper::~FakeDriveServiceWrapper() {}
@@ skipping 71 matching lines @@
     const UploadCompletionCallback& callback,
     const ProgressCallback& progress_callback) {
   // At the moment, sync file system doesn't support resuming of the uploading.
   // So this method shouldn't be reached.
   NOTREACHED();
   return CancelCallback();
 }
 
 }  // namespace drive_backend
 }  // namespace sync_file_system