Cleanup: Deprecate DriveFileSyncService::kServiceName

chrome/browser/sync_file_system/remote_file_sync_service.h

Index: chrome/browser/sync_file_system/remote_file_sync_service.h
diff --git a/chrome/browser/sync_file_system/remote_file_sync_service.h b/chrome/browser/sync_file_system/remote_file_sync_service.h
index 0deb9c410094f3556602ff0fcfbea932593bcbd5..62b86c7287821560288e1301c155c9fca1a90413 100644
--- a/chrome/browser/sync_file_system/remote_file_sync_service.h
+++ b/chrome/browser/sync_file_system/remote_file_sync_service.h
@@ -136,9 +136,6 @@ class RemoteFileSyncService {
   // returned by the last OnRemoteServiceStateUpdated notification.
   virtual RemoteServiceState GetCurrentState() const = 0;
 
-  // Returns the service name that backs this remote_file_sync_service.
-  virtual const char* GetServiceName() const = 0;
-
   // Enables or disables the background sync.
   // Setting this to false should disable the synchronization (and make
   // the service state to REMOTE_SERVICE_DISABLED), while setting this to