[NOCOMMIT] Make DriveService{Wrapper|Messenger} class

chrome/browser/sync_file_system/drive_backend/sync_engine_initializer_unittest.cc

Index: chrome/browser/sync_file_system/drive_backend/sync_engine_initializer_unittest.cc
diff --git a/chrome/browser/sync_file_system/drive_backend/sync_engine_initializer_unittest.cc b/chrome/browser/sync_file_system/drive_backend/sync_engine_initializer_unittest.cc
index ac1bcc9bd99a20e262067fea3454cb27ea8a3860..1660ad49cb7b77a5c844c42996238f5bf5144dc3 100644
--- a/chrome/browser/sync_file_system/drive_backend/sync_engine_initializer_unittest.cc
+++ b/chrome/browser/sync_file_system/drive_backend/sync_engine_initializer_unittest.cc
@@ -48,10 +48,11 @@ class SyncEngineInitializerTest : public testing::Test {
     ASSERT_TRUE(database_dir_.CreateUniqueTempDir());
     in_memory_env_.reset(leveldb::NewMemEnv(leveldb::Env::Default()));
 
-    fake_drive_service_.reset(new drive::FakeDriveService());
+    scoped_ptr<drive::FakeDriveService>
+        fake_drive_service(new drive::FakeDriveService);
 
     sync_context_.reset(new SyncEngineContext(
-        fake_drive_service_.get(),
+        fake_drive_service.PassAs<drive::DriveServiceInterface>(),
         NULL /* drive_uploader */,
         base::MessageLoopProxy::current(),
         base::MessageLoopProxy::current()));
@@ -66,7 +67,6 @@ class SyncEngineInitializerTest : public testing::Test {
     sync_task_manager_.reset();
     metadata_database_.reset();
     sync_context_.reset();
-    fake_drive_service_.reset();
     base::RunLoop().RunUntilIdle();
   }
 
@@ -229,7 +229,6 @@ class SyncEngineInitializerTest : public testing::Test {
   scoped_ptr<MetadataDatabase> metadata_database_;
   scoped_ptr<SyncTaskManager> sync_task_manager_;
   scoped_ptr<SyncEngineContext> sync_context_;
-  scoped_ptr<drive::FakeDriveService> fake_drive_service_;
 
   DISALLOW_COPY_AND_ASSIGN(SyncEngineInitializerTest);
 };