[SyncFS] Split SyncEngine and SyncEngineContext

chrome/browser/sync_file_system/drive_backend/sync_engine_context.h

Index: chrome/browser/sync_file_system/drive_backend/sync_engine_context.h
diff --git a/chrome/browser/sync_file_system/drive_backend/sync_engine_context.h b/chrome/browser/sync_file_system/drive_backend/sync_engine_context.h
index 2a90d849e6404259a9a846db7b7621a3f85aa8d5..be9640620a0f7755fce02ad5a3cced33558dd85f 100644
--- a/chrome/browser/sync_file_system/drive_backend/sync_engine_context.h
+++ b/chrome/browser/sync_file_system/drive_backend/sync_engine_context.h
@@ -6,6 +6,8 @@
 #define CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_SYNC_ENGINE_CONTEXT_H_
 
 #include "base/basictypes.h"
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
 
 namespace base {
 class SequencedTaskRunner;
@@ -26,16 +28,29 @@ class MetadataDatabase;
 
 class SyncEngineContext {
  public:
-  SyncEngineContext() {}
-  ~SyncEngineContext() {}
+  SyncEngineContext(scoped_ptr<drive::DriveServiceInterface> drive_service,
+                    scoped_ptr<drive::DriveUploaderInterface> drive_uploader,
+                    base::SequencedTaskRunner* task_runner);
+  ~SyncEngineContext();
 
-  virtual drive::DriveServiceInterface* GetDriveService() = 0;
-  virtual drive::DriveUploaderInterface* GetDriveUploader() = 0;
-  virtual MetadataDatabase* GetMetadataDatabase() = 0;
-  virtual RemoteChangeProcessor* GetRemoteChangeProcessor() = 0;
-  virtual base::SequencedTaskRunner* GetBlockingTaskRunner() = 0;
+  drive::DriveServiceInterface* GetDriveService();
+  drive::DriveUploaderInterface* GetDriveUploader();
+  MetadataDatabase* GetMetadataDatabase();
+  RemoteChangeProcessor* GetRemoteChangeProcessor();
+  base::SequencedTaskRunner* GetBlockingTaskRunner();
+
+  void SetMetadataDatabase(scoped_ptr<MetadataDatabase> metadata_database);
+  void SetRemoteChangeProcessor(RemoteChangeProcessor* remote_change_processor);
+
+  scoped_ptr<MetadataDatabase> PassMetadataDatabase();
 
  private:
+  scoped_ptr<drive::DriveServiceInterface> drive_service_;
+  scoped_ptr<drive::DriveUploaderInterface> drive_uploader_;
+  scoped_ptr<MetadataDatabase> metadata_database_;
+  RemoteChangeProcessor* remote_change_processor_;  // Do not own
+  scoped_refptr<base::SequencedTaskRunner> task_runner_;
+
   DISALLOW_COPY_AND_ASSIGN(SyncEngineContext);
 };