[SyncFileSystem] Separate out ApplyLocalChange from DriveFileSyncService.

chrome/browser/sync_file_system/drive_file_sync_service.h

Index: chrome/browser/sync_file_system/drive_file_sync_service.h
diff --git a/chrome/browser/sync_file_system/drive_file_sync_service.h b/chrome/browser/sync_file_system/drive_file_sync_service.h
index 9446130382c69e132665629b4ccf9b79f98cde17..0c09d3b4a418f35951a25e53a542effe7c66f91f 100644
--- a/chrome/browser/sync_file_system/drive_file_sync_service.h
+++ b/chrome/browser/sync_file_system/drive_file_sync_service.h
@@ -23,6 +23,7 @@
 #include "chrome/browser/sync_file_system/local_sync_operation_resolver.h"
 #include "chrome/browser/sync_file_system/remote_change_handler.h"
 #include "chrome/browser/sync_file_system/remote_file_sync_service.h"
+#include "chrome/browser/sync_file_system/sync_file_system.pb.h"
 #include "webkit/fileapi/syncable/file_change.h"
 #include "webkit/fileapi/syncable/sync_action.h"
 #include "webkit/fileapi/syncable/sync_callbacks.h"
@@ -41,6 +42,10 @@ class Location;
 
 namespace sync_file_system {
 
+namespace drive {
+class ApplyLocalChangeDelegate;
+}
+
 class DriveFileSyncTaskManager;
 
 // Maintains remote file changes.
@@ -52,6 +57,12 @@ class DriveFileSyncService : public RemoteFileSyncService,
                              public base::SupportsWeakPtr<DriveFileSyncService>,
                              public google_apis::DriveNotificationObserver {
  public:
+  enum ConflictResolutionResult {
+    CONFLICT_RESOLUTION_MARK_CONFLICT,
+    CONFLICT_RESOLUTION_LOCAL_WIN,
+    CONFLICT_RESOLUTION_REMOTE_WIN,
+  };
+
   typedef base::Callback<void(const SyncStatusCallback& callback)> Task;
 
   static const char kServiceName[];
@@ -127,8 +138,15 @@ class DriveFileSyncService : public RemoteFileSyncService,
       SyncStatusCode sync_status,
       google_apis::GDataErrorCode gdata_error);
 
+  static std::string PathToTitle(const base::FilePath& path);
+  static base::FilePath TitleToPath(const std::string& title);
+  static DriveMetadata::ResourceType SyncFileTypeToDriveMetadataResourceType(
+      SyncFileType file_type);
+
  private:
   friend class DriveFileSyncTaskManager;
+  friend class drive::ApplyLocalChangeDelegate;
+
   friend class DriveFileSyncServiceMockTest;
   friend class DriveFileSyncServiceSyncTest;
   struct ApplyLocalChangeParam;
@@ -193,57 +211,11 @@ class DriveFileSyncService : public RemoteFileSyncService,
   // Resolves LocalSync operation type. If non-null |param| is given
   // the method also populates param->has_drive_metadata and
   // param->drive_metadata fields.
-  void ApplyLocalChangeInternal(
-      scoped_ptr<ApplyLocalChangeParam> param,
-      SyncStatusCode status,
-      const std::string& resource_id);
-  void DidDeleteForResolveToLocalForLocalSync(
-      const std::string& origin_resource_id,
-      const base::FilePath& local_file_path,
-      const fileapi::FileSystemURL& url,
-      scoped_ptr<ApplyLocalChangeParam> param,
-      google_apis::GDataErrorCode error);
-  void DidApplyLocalChange(
-      scoped_ptr<ApplyLocalChangeParam> param,
-      const google_apis::GDataErrorCode error,
-      SyncStatusCode status);
-  void DidResolveConflictToRemoteChange(
-      scoped_ptr<ApplyLocalChangeParam> param,
-      SyncStatusCode status);
-  void DidUploadNewFileForLocalSync(
-      scoped_ptr<ApplyLocalChangeParam> param,
-      google_apis::GDataErrorCode error,
-      const std::string& resource_id,
-      const std::string& file_md5);
-  void DidCreateDirectoryForLocalSync(
-      scoped_ptr<ApplyLocalChangeParam> param,
-      google_apis::GDataErrorCode error,
-      const std::string& resource_id);
-  void DidUploadExistingFileForLocalSync(
-      scoped_ptr<ApplyLocalChangeParam> param,
-      google_apis::GDataErrorCode error,
-      const std::string& resource_id,
-      const std::string& file_md5);
-  void DidDeleteFileForLocalSync(
-      scoped_ptr<ApplyLocalChangeParam> param,
-      google_apis::GDataErrorCode error);
-  void HandleConflictForLocalSync(
-      scoped_ptr<ApplyLocalChangeParam> param);
-  void ResolveConflictForLocalSync(
-      scoped_ptr<ApplyLocalChangeParam> param,
-      const base::Time& remote_updated_time,
+  ConflictResolutionResult ResolveConflictForLocalSync(
+      SyncFileType local_file_type,
+      const base::Time& local_update_time,
       SyncFileType remote_file_type,
-      SyncStatusCode status);
-  void StartOverLocalSync(
-      scoped_ptr<ApplyLocalChangeParam> param,
-      SyncStatusCode status);
-  void ResolveConflictToRemoteForLocalSync(
-      scoped_ptr<ApplyLocalChangeParam> param,
-      SyncFileType remote_file_type);
-  void DidEnsureOriginRootForUploadNewFile(
-      scoped_ptr<ApplyLocalChangeParam> param,
-      SyncStatusCode status,
-      const std::string& parent_resource_id);
+      const base::Time& remote_update_time);
 
   void UpdateRegisteredOrigins();