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

chrome/browser/chromeos/drive/sync_client_unittest.cc

Index: chrome/browser/chromeos/drive/sync_client_unittest.cc
diff --git a/chrome/browser/chromeos/drive/sync_client_unittest.cc b/chrome/browser/chromeos/drive/sync_client_unittest.cc
index 784e247db3dc9663d03f683c726f8feae8398bbf..77da5459cf61a69ef61c40f3fdd53dd3c434ef77 100644
--- a/chrome/browser/chromeos/drive/sync_client_unittest.cc
+++ b/chrome/browser/chromeos/drive/sync_client_unittest.cc
@@ -4,7 +4,6 @@
 
 #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"
@@ -208,14 +207,10 @@ class SyncClientTest : public testing::Test {
     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(