drive: FileCache::Store marks the entry as dirty if empty MD5 is given

chrome/browser/chromeos/drive/sync_client_unittest.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 "chrome/browser/chromeos/drive/sync_client.h"
 
-#include "base/callback_helpers.h"
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/prefs/testing_pref_service.h"
 #include "base/run_loop.h"
 #include "base/test/test_timeouts.h"
 #include "chrome/browser/chromeos/drive/change_list_loader.h"
 #include "chrome/browser/chromeos/drive/drive.pb.h"
 #include "chrome/browser/chromeos/drive/fake_free_disk_space_getter.h"
@@ skipping 183 matching lines @@
     EXPECT_EQ(FILE_ERROR_OK, cache_->Pin(GetLocalId("baz")));
 
     // Prepare a pinned-and-fetched file.
     const std::string md5_fetched = "md5";
     EXPECT_EQ(FILE_ERROR_OK,
               cache_->Store(GetLocalId("fetched"), md5_fetched,
                             temp_file, FileCache::FILE_OPERATION_COPY));
     EXPECT_EQ(FILE_ERROR_OK, cache_->Pin(GetLocalId("fetched")));
 
     // Prepare a pinned-and-fetched-and-dirty file.
-    const std::string md5_dirty = "";  // Don't care.
     EXPECT_EQ(FILE_ERROR_OK,
-              cache_->Store(GetLocalId("dirty"), md5_dirty,
+              cache_->Store(GetLocalId("dirty"), std::string(),
                             temp_file, FileCache::FILE_OPERATION_COPY));
     EXPECT_EQ(FILE_ERROR_OK, cache_->Pin(GetLocalId("dirty")));
-    scoped_ptr<base::ScopedClosureRunner> file_closer;
-    EXPECT_EQ(FILE_ERROR_OK,
-              cache_->OpenForWrite(GetLocalId("dirty"), &file_closer));
 
     // Prepare a removed file.
     file_system::RemoveOperation remove_operation(
         base::MessageLoopProxy::current().get(), &observer_, metadata_.get(),
         cache_.get());
     remove_operation.Remove(
         metadata_->GetFilePath(GetLocalId("removed")),
         false,  // is_recursive
         google_apis::test_util::CreateCopyResultCallback(&error));
     base::RunLoop().RunUntilIdle();
@@ skipping 198 matching lines @@
   ASSERT_FALSE(drive_service_->paused_action().is_null());
   drive_service_->paused_action().Run();
   base::RunLoop().RunUntilIdle();
 
   // Task should be run twice.
   EXPECT_EQ(2, drive_service_->download_file_count());
 }
 
 }  // namespace internal
 }  // namespace drive